Renewing cert after IP change

My ISP being the wonderful company that it is has decided to randomly change my public IP. I made the necessary changes in the DNS record to point to the correct IP but now the site doesn’t work anymore. Thought I might have to get a new cert but running renewcert just gets stuck on

Processing /etc/letsencrypt/renewal/[DOMAIN].conf

It’s been like this for a couple hours now I can’t really tell what exactly is going wrong here. Got any tips?

I would recommend that you contact Support, if you have not already done so. Your situation seems quite specialized, so I don’t know if there are any community members here who can assist.