Only one wireless connection

I was tweaking some settings after a problem was resolved per below thread.

Creating this new thread as I marked the other one as resolved.

Now I am able to connect to wireless network only from one laptop. Other devices connect to the wireless but not getting internet. Rebooting did not help. Can some please help me with troubleshooting.

I tried restarting dnsmasq and dnscrypt-proxy...

root@PARIS:/usr/share/dnscrypt-proxy# clear
root@PARIS:/usr/share/dnscrypt-proxy# /etc/init.d/dnscrypt restart
-ash: /etc/init.d/dnscrypt: not found
root@PARIS:/usr/share/dnscrypt-proxy# /etc/init.d/dnsmasq restart
udhcpc: started, v1.28.4
udhcpc: sending discover
udhcpc: no lease, failing
root@PARIS:/usr/share/dnscrypt-proxy# logread | grep -n "using nameserver"
109:Sat Jan 25 09:33:00 2020 daemon.info dnsmasq[6357]: using nameserver 8.8.8.8#53 for domain pool.ntp.org
110:Sat Jan 25 09:33:00 2020 daemon.info dnsmasq[6357]: using nameserver 127.0.0.1#5353
123:Sat Jan 25 09:33:00 2020 daemon.info dnsmasq[6357]: using nameserver 8.8.8.8#53 for domain pool.ntp.org
124:Sat Jan 25 09:33:00 2020 daemon.info dnsmasq[6357]: using nameserver 127.0.0.1#5353
221:Sat Jan 25 09:34:11 2020 daemon.info dnsmasq[6442]: using nameserver 208.67.222.222#53 for domain pool.ntp.org
222:Sat Jan 25 09:34:11 2020 daemon.info dnsmasq[6442]: using nameserver 127.0.0.1#5353
235:Sat Jan 25 09:34:11 2020 daemon.info dnsmasq[6442]: using nameserver 208.67.222.222#53 for domain pool.ntp.org
236:Sat Jan 25 09:34:11 2020 daemon.info dnsmasq[6442]: using nameserver 127.0.0.1#5353
291:Sat Jan 25 09:34:41 2020 daemon.info dnsmasq[6527]: using nameserver 208.67.222.222#53 for domain pool.ntp.org
292:Sat Jan 25 09:34:41 2020 daemon.info dnsmasq[6527]: using nameserver 127.0.0.1#5353
305:Sat Jan 25 09:34:41 2020 daemon.info dnsmasq[6527]: using nameserver 208.67.222.222#53 for domain pool.ntp.org
306:Sat Jan 25 09:34:41 2020 daemon.info dnsmasq[6527]: using nameserver 127.0.0.1#5353
500:Sat Jan 25 09:37:54 2020 daemon.info dnsmasq[6527]: using nameserver 208.67.222.222#53 for domain pool.ntp.org
501:Sat Jan 25 09:37:54 2020 daemon.info dnsmasq[6527]: using nameserver 127.0.0.1#5353
597:Sat Jan 25 09:38:41 2020 daemon.info dnsmasq[6916]: using nameserver 208.67.222.222#53 for domain pool.ntp.org
598:Sat Jan 25 09:38:41 2020 daemon.info dnsmasq[6916]: using nameserver 127.0.0.1#5353
611:Sat Jan 25 09:38:41 2020 daemon.info dnsmasq[6916]: using nameserver 208.67.222.222#53 for domain pool.ntp.org
612:Sat Jan 25 09:38:41 2020 daemon.info dnsmasq[6916]: using nameserver 127.0.0.1#5353
root@PARIS:/usr/share/dnscrypt-proxy#

Please post the contents of the following config files:
/etc/config/network
/etc/config/firewall
/etc/config/dhcp
/etc/config/wireless

Be sure to paste each into a preformatted text block to maintain the indents and such.

I restored it from an old backup, which is factory installation with some traffic rules. I need to install and configure other stuff though.

Appreciate your response, psherman !

I installed simple-adblock and trying configure it. I am getting below error any idea? Actually, here is where I started when I messed up my previous installations.

XML Parsing Error: not well-formed
Location: http://192.168.1.1/cgi-bin/luci/admin/services/simple-adblock
Line Number 143, Column 86:
Error: downloading 'https://pgl.yoyo.org/as/serverlist.php?hostformat=hosts&showintro=1&mimetype=plaintext'.
-------------------------------------------------------------------------------------^

My bad. installed some missing packages and the error is gone now.