4.x Wireguard REKEY-TIMEOUT troubleshooting

Case update: Start vpn ddns bug: Starvpn provide wireguard configure with endpoint as ddns. But the ddns may resolve to some servers that does not work at all. Users should hardcore the ddns as correct IP or ask Starvpn to fix the bug. Slate AX (GL-AXT1800) Wireguard Issue (REKEY-TIMEOUT) - #34 by hectorricardo