PPTP VPN - Unknown error (USER_REQUEST)

I am trying to setup a VPN connection from OpenWrt to my VPN provider (seed4me) via PPTP protocol.
And I see in LuCi - Unknown error (USER_REQUEST).
But No errors in log:

Tue Sep 12 14:59:42 2023 daemon.info pppd[18184]: Plugin pptp.so loaded.
Tue Sep 12 14:59:42 2023 daemon.info pppd[18184]: PPTP plugin version 1.00
Tue Sep 12 14:59:42 2023 daemon.notice pppd[18184]: pppd 2.4.9 started by root, uid 0
Tue Sep 12 14:59:43 2023 user.notice pbr: Reloading pbr seed4me_pptp_ru interface routing due to ifdown of seed4me_pptp_ru ()
Tue Sep 12 14:59:44 2023 daemon.info pppd[18184]: Renamed interface ppp0 to pptp-seed4me_pptp_ru
Tue Sep 12 14:59:44 2023 daemon.info pppd[18184]: Using interface pptp-seed4me_pptp_ru
Tue Sep 12 14:59:44 2023 daemon.notice pppd[18184]: Connect: pptp-seed4me_pptp_ru <--> pptp (ru.seed4.me)
Tue Sep 12 14:59:44 2023 kern.info kernel: [ 1369.754154] pptp-seed4me_pp: renamed from ppp0
Tue Sep 12 14:59:44 2023 daemon.notice pppd[18184]: CHAP authentication succeeded
Tue Sep 12 14:59:44 2023 daemon.notice pppd[18184]: MPPE 128-bit stateless compression enabled
Tue Sep 12 14:59:44 2023 daemon.notice pppd[18184]: local  IP address 192.168.77.31
Tue Sep 12 14:59:44 2023 daemon.notice pppd[18184]: remote IP address 192.168.77.1
Tue Sep 12 14:59:44 2023 daemon.notice pppd[18184]: primary   DNS address 192.168.77.1
Tue Sep 12 14:59:44 2023 daemon.notice pppd[18184]: secondary DNS address 8.8.8.8

And I can even ping the gateway.

root@OpenWrt:~# ping 192.168.77.1
PING 192.168.77.1 (192.168.77.1): 56 data bytes
64 bytes from 192.168.77.1: seq=0 ttl=64 time=69.519 ms
^C
--- 192.168.77.1 ping statistics ---
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max = 69.519/69.519/69.519 ms

why not use wirguard instead if the openwrt device is the client?

When I enable L2TP VPN client connection from OpenWrt to my VPN server via L2TP - connection works, but in logs I see a lot of errors:

Tue Sep 12 15:05:37 2023 user.notice pbr: Reloading pbr due to firewall action: includes
Tue Sep 12 15:05:37 2023 user.notice pbr: Reloading pbr seed4me interface routing due to ifup of seed4me (l2tp-seed4me)
Tue Sep 12 15:05:40 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:05:43 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:05:46 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:05:49 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:05:52 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:05:55 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:05:58 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:01 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:04 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:06 2023 daemon.warn pppd[19348]: CCP: timeout sending Config-Requests
Tue Sep 12 15:06:07 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:10 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:13 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:16 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:19 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:22 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:25 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:28 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:31 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:34 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:37 2023 daemon.warn pppd[19348]: CCP: timeout sending Config-Requests
Tue Sep 12 15:06:37 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:40 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:43 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:46 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:49 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00
Tue Sep 12 15:06:52 2023 daemon.err pppd[19348]: Received bad configure-rej:  12 06 00 00 00 00

what could be wrong?

seed4me doesn't support it