Disable ssl and call not going

Hello everyone.
I am facing a strange issue. i have removed my letsencrypt from my server
with this command

# Remove certificates for a given domain
sudo certbot delete --cert-name $mydomain

after that my nginx was stop working. and then i get this to work with some nginx conf file modificaiton.

now its working with https but not secure way.
everything is fine. but i can’t login to my SIP account and also cant make a call even via access number and everything.
what can be wrong ?

please help me


Hello @sokalsondha ,
Please let me know if your registering the sip device via domain or IP?