Server crashing
My server is crashing every day in about same time, located in EU.
I have copy paste server located in US, it's never crashing.

I asked for help to my hosting provider, they can't find any issues with server.. maybe you will be able to help me what might be the problem.
Are you sure it is crashing? If it is crashing, you should see dump files under the server root install location.
All players getting timed out with rollback and server is starting up again in that time. I can't find anything related to crash or errors.
What can it be?
sounds like your server is doing a daily reboot... note that if your using timedExecute and using the time to restart it will go by the time on the local machine not your time.
No timed options on my server, also I'm using plugins without any timers.
yes players will time out if the server restarts... check and make sure a daily restart isnt set up on the actual server itself then.... especially if its every day at the same time
I got scheduled daily restart running, but do not mix restart with crash.
My server is crashing with rollback and shit.. but restart is with countdown and save.

The rollback is because the server isnt saving before the crash/restart.
If its "crashing" every day at the same time then it sounds like a restart.
The rollback as you call it is because the server isnt saving before the restart
NOW if you can provide crash logs or something then maybe someone can help you further

It's not crashing in same time, but about in same time. 10-30 minutes difference.
No crash logs...
If it is on shared server... I will not mention company but I used most of them in Europe... so some of them just reboot their machines everyday and literally dont care about theit clients... this sort of crash look exactly like your issue. If they reboot machines your server will not save and will roll back...
Mate. You may have the same problem I had. I had a player who had a hack running who would time all the players out, then the server would crash. The sign that this could be the cause is the same player joining a few min before the crashes. I had player joins linked to discord so it was easier for me to detect this. 
I highly recommend checking to see if the same player joined before every one of the crashes. In my case I went from multiple crashes per day, to zero crashes by banning the one player.
miesku
If it is on shared server... I will not mention company but I used most of them in Europe... so some of them just reboot their machines everyday and literally dont care about theit clients... this sort of crash look exactly like your issue. If they reboot machines your server will not save and will roll back...
Gilfirkin
Mate. You may have the same problem I had. I had a player who had a hack running who would time all the players out, then the server would crash. The sign that this could be the cause is the same player joining a few min before the crashes. I had player joins linked to discord so it was easier for me to detect this. 
I highly recommend checking to see if the same player joined before every one of the crashes. In my case I went from multiple crashes per day, to zero crashes by banning the one player.

Thank you guys, definitely has to be one of these. I will check that out