Hi @razvan_iacob,

I'm afraid I cannot provide that level of support. While on rare occasions I do log into user ENVs to observe a particular issue that many are affected by, this is not a scalable model and is also not the case here.
I hope you understand.

As for how to upgrade, including links to upgrade instructions below.
As with any complex server side product, upgrades can get complicated, we do our very best to simplify and test the process continuously but there are always edge cases. My best recommendation to avoid downtime is to first do so on a staging ENV. If you'll have issues post upgrading, do post them and I'll gladly help you solve them.
In general, I recommend performing upgrades at small intervals, you don't have to upgrade every other week, but the longer you wait between upgrades, the bigger the delta and risk.

Upgrade howtos:

RPM based:

Deb based:

Or, if running a cluster: