I cannot access to Z-Push

My YunoHost server

Hardware: Dedicated Server
I have access to my server : Through SSH | through the webadmin
Are you in a special context or did you perform some particular tweaking on your YunoHost instance ? : no

Description of my issue

I installed Z-Push on my server; nevertheless, it did not accept my credentials. I tried SSH login inf+ SSO and Admin panel.
aaaaaaaaAnnotation 2020-07-31 184709

This is the normal behavior…
Z-push is not a web app but a service

I put the photo for demonstrating. It cannot be accessed by the mobile phone or tablet.