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Sorry to hear you’re facing problems 
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Some useful links to gather information about your Nextcloud Talk installation:
Information about Signaling server: /index.php/index.php/settings/admin/talk#signaling_server
Information about TURN server: /index.php/settings/admin/talk#turn_server
Information about STUN server: /index.php/settings/admin/talk#stun_server
Nextcloud version : 32.0.6
Talk Server version (eg, 14.0.2): 22.0.9
Custom Signaling server configured: yes
Custom TURN server configured: yes
Custom STUN server configured: yes
The issue you are facing:
Hi,
I’m getting a “the certificate of wss://[my Websocket URL] wil expire in 6 days” – this is normal, bu as my reverse proxy server uses the short-lived let’s encrypt certificates (7 days), I’m getting these notifications every week.
Would it be possible to disable that notification, or change the timespan? BTW my nextcloud server is using the same kind of certificates and I’m not getting any notificiations of upcoming expirations – this is limited to talk.
I’d like to keep my reverse proxy (npmplus) defaut configuration, ie, use the 7days certificates, rather than eg 90 days.
Thanks in advance