NExtcloud 12. No connection relogin OpenFire server

Hi. I am new user of NC, and many things are hard to understand for me. However i have openfire xmpp server and nc12. I just added ojsxc app and enable HTTP Bind in xmpp server. At first look all was well. But if i reload page, or swith to galery, il see disconnect from xmpp and must reconnect. What can i do? Sorry for my English.

Please checkout our “Report of bug” section and answer the remaining questions.

I am already checked the answers. No connection! relogin too often
There is the same situation, but without solution :frowning: