[נפתר] issue after migrating (urgent)

Background of the issue:
Hi guys
Love the plug-in, but we have a few issues

We have a staging website that we are working on and yesterday we deployed it, after deployed the homepage shows 404 error and "all" slug.

I record a video for you to show the issue. I hope you can understand from there. I also duplicated the staging website because maybe the problem was on the way that the hosting company deployed staging to live.

I've done my research and I tried many things and nothing seems to work. The translation seems to be an attached to the language that it should be (eng&ch).

I'm attaching you to all of the websites and credentials
I really hope you can help us figure this out my treatment times nothing seems to work and we have to deploy it as soon as possible.

Thank you very much God bless

Live Website: קישור נסתר
Staging: קישור נסתר

duplicated (you can connect to this one and fix the issue, i will change the domain to that website after): קישור נסתר

login info: קישור נסתר (same for all websites, the live website login url is קישור נסתר)

the video: קישור נסתר

FTP for duplicated website:
159.203.125.239
user: newrotec
pass: Newrotec1
port: 22

FTP for staging app:
159.203.125.239
user: rotec
pass: Omega055665!
port 22

FTP for live app:
159.203.125.239
user: roteclive
pass: Osher055!

Symptoms:
Homepage shows 404 error and 'all' slug after deployment.
after deploying to live, flag not showing (on duplicate its fine)
general misbehaves...

Questions:
How can we resolve the 404 error on the homepage after deployment?
Is there an issue with the way the hosting company deployed staging to live?
Why does the translation seem to be attached to the wrong language?