I tried that. Even SCP'd into the router and deleted certs. Did not fix my problem.
I tried changing DDNS from Primary to Secondary to Auto. No luck.
However, I think I found the cause and hopefully someone can figure out a fix.
I have my AX86U_Pro in load balancing mode, with policy rules that send a range of IPs to the primary wan (eth5) and the rest to the secondary wan (eth0).
I can disable Dual Wan, and DDNS & Let's Encrypt update immediately.
I can also change to Dual Wan Failover and both work fine.
But once I switch to load balance, DDNS and Let's Encrypt stall, and I keep getting this type of error on eth5 or eth0:
View attachment 55332
And when I switch to single wan or dual wan failover, I can enable or disable DDNS, switch to auto SSL and back to Let's Encrypt, and everything updates seamlessly.
I repeated this test 5 times (single wan, check SSL & DDNS - dual wan failover, check SSL & DDNS - dual wan load balance, check SSL & DDNS) and every single dime load balance is what broke things....
Thoughts?