Looking for new compatible router in Bolivia (was My ssid disappear)

Installing and Using OpenWrt
1

My Ap mode:master
Just disappear and cant find my ssid to connected
So i have to login in luci and delete client mode and ap , configure again or reset

2

Please connect to your OpenWrt device using ssh and copy the output of the following commands and post it here using the "Preformatted text </> " button:
grafik
Remember to redact passwords, MAC addresses and any public IP addresses you may have:

ubus call system board
cat /etc/config/network
cat /etc/config/wireless
cat /etc/config/dhcp
cat /etc/config/firewall
3 
root@OpenWrt:~# ubus call system board
{
        "kernel": "4.9.243",
        "hostname": "OpenWrt",
        "system": "Atheros AR9330 rev 1",
        "model": "TP-Link TL-WR741N\/ND v4",
        "board_name": "tl-wr741nd-v4",
        "release": {
                "distribution": "OpenWrt",
                "version": "18.06.9",
                "revision": "r8077-7cbbab7246",
                "target": "ar71xx\/tiny",
                "description": "OpenWrt 18.06.9 r8077-7cbbab7246"
        }
4 
root@OpenWrt:~# cat /etc/config/wireless
config wifi-device 'radio0'
        option type 'mac80211'
        option hwmode '11g'
        option path 'platform/ar933x_wmac'
        option htmode 'HT20'
        option legacy_rates '1'
        option country 'BO'
        option disabled '0'
        option channel '7'
config wifi-iface 'default_radio0'
        option device 'radio0'
        option network 'lan'
        option mode 'ap'
        option ssid 'TPLINK'
        option encryption 'psk2'
        option key 'Topolink'
5 

root@OpenWrt:~# cat /etc/config/network
config interface 'loopback'
        option ifname 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'
config globals 'globals'
        option ula_prefix 'fd50:d989:60fc::/48'
config interface 'lan'
        option type 'bridge'
        option ifname 'eth0.1'
        option proto 'static'
        option netmask '255.255.255.0'
        option ipaddr '192.168.1.55'
config switch
        option name 'switch0'
        option reset '1'
        option enable_vlan '1'
config switch_vlan
        option device 'switch0'
        option vlan '1'
        option ports '1 2 3 4 0t'
6 
root@OpenWrt:~# cat /etc/config/dhcp
config dnsmasq
        option domainneeded '1'
        option boguspriv '1'
        option filterwin2k '0'
        option localise_queries '1'
        option rebind_protection '1'
        option rebind_localhost '1'
        option local '/lan/'
        option domain 'lan'
        option expandhosts '1'
        option nonegcache '0'
        option authoritative '1'
        option readethers '1'
        option leasefile '/tmp/dhcp.leases'
        option resolvfile '/tmp/resolv.conf.auto'
        option nonwildcard '1'
        option localservice '1'
config dhcp 'lan'
        option interface 'lan'
        option ignore '1'
config dhcp 'wan'
        option interface 'wan'
        option ignore '1'
config odhcpd 'odhcpd'
        option maindhcp '0'
        option leasefile '/tmp/hosts/odhcpd'
        option leasetrigger '/usr/sbin/odhcpd-update'
        option loglevel '4'
7 
root@OpenWrt:~# cat /etc/config/firewall
config defaults
        option syn_flood '1'
        option input 'ACCEPT'
        option output 'ACCEPT'
        option forward 'REJECT'
config zone
        option name 'lan'
        option input 'ACCEPT'
        option output 'ACCEPT'
        option forward 'ACCEPT'
        option network 'lan'
config zone
        option name 'wan'
        option input 'REJECT'
        option output 'ACCEPT'
        option forward 'REJECT'
        option masq '1'
        option mtu_fix '1'
        option network 'wan wan6 wwan'
config forwarding
        option src 'lan'
        option dest 'wan'
config rule
        option name 'Allow-DHCP-Renew'
        option src 'wan'
        option proto 'udp'
        option dest_port '68'
        option target 'ACCEPT'
        option family 'ipv4'
config rule
        option name 'Allow-Ping'
        option src 'wan'
        option proto 'icmp'
        option icmp_type 'echo-request'
        option family 'ipv4'
        option target 'ACCEPT'
config rule
        option name 'Allow-IGMP'
        option src 'wan'
        option proto 'igmp'
        option family 'ipv4'
        option target 'ACCEPT'
config rule
        option name 'Allow-DHCPv6'
        option src 'wan'
        option proto 'udp'
        option src_ip 'fc00::/6'
        option dest_ip 'fc00::/6'
        option dest_port '546'
        option family 'ipv6'
        option target 'ACCEPT'
config rule
        option name 'Allow-MLD'
        option src 'wan'
        option proto 'icmp'
        option src_ip 'fe80::/10'
        list icmp_type '130/0'
        list icmp_type '131/0'
        list icmp_type '132/0'
        list icmp_type '143/0'
        option family 'ipv6'
        option target 'ACCEPT'
config rule
        option name 'Allow-ICMPv6-Input'
        option src 'wan'
        option proto 'icmp'
        list icmp_type 'echo-request'
        list icmp_type 'echo-reply'
        list icmp_type 'destination-unreachable'
        list icmp_type 'packet-too-big'
        list icmp_type 'time-exceeded'
        list icmp_type 'bad-header'
        list icmp_type 'unknown-header-type'
        list icmp_type 'router-solicitation'
        list icmp_type 'neighbour-solicitation'
        list icmp_type 'router-advertisement'
        list icmp_type 'neighbour-advertisement'
        option limit '1000/sec'
        option family 'ipv6'
        option target 'ACCEPT'
config rule
        option name 'Allow-ICMPv6-Forward'
        option src 'wan'
        option dest '*'
        option proto 'icmp'
        list icmp_type 'echo-request'
        list icmp_type 'echo-reply'
        list icmp_type 'destination-unreachable'
        list icmp_type 'packet-too-big'
        list icmp_type 'time-exceeded'
        list icmp_type 'bad-header'
        list icmp_type 'unknown-header-type'
        option limit '1000/sec'
        option family 'ipv6'
        option target 'ACCEPT'
config rule
        option name 'Allow-IPSec-ESP'
        option src 'wan'
        option dest 'lan'
        option proto 'esp'
        option target 'ACCEPT'
config rule
        option name 'Allow-ISAKMP'
        option src 'wan'
        option dest 'lan'
        option dest_port '500'
        option proto 'udp'
        option target 'ACCEPT'
config include
        option path '/etc/firewall.user'
root@OpenWrt:~#
8

Likely some electronic component inside died in 10 years of usage.
Device is not supported for last five, time to get something more modern:
https://openwrt.org/toh/views/toh_available_16128_ax-wifi
(changed title, maybe somebody local knows the stores, as comes back from google it is "ask for price" and "out of stock" even for very casual electronics.)