Ilya Kalashnikov

show your connection settings What xmpp server you are using?

Most likely, you do not follow the rules of XEP-0085 and Xabber does not know that the Contact supports chat state notifications

you probably just need to install one or more Intermediate certificates. Open a text editor and paste the entire body of each certificate into one text file in the following...

How exactly do calls not work? What are you doing? What happens after that? Did you watch the console log?

Browsers block access to media devices If the current document isn't loaded securely. U have to use https or for testing try https://support.google.com/chrome/thread/8602710?hl=en

I don’t know anything about "openfire-pade-plugin" and how it works. Calls in the Xabber for Web do not work for the reason that I described above. If you open the...

ssl_cacertfile is the certificate of CA that issued your certificate and set {ssl, true}

{ssl_cacertfile, "/etc/ssl/certs/ca-certificates.crt"},

upgrade erlang

install version 20 from https://www.erlang-solutions.com/resources/download.html