So, we have decided to switch back to cPanel. It was nice experience with Plesk panel, but we are not willing to pay for each simple "add-ons", tools etc. which are normaly free and included in cPanel. Also such things/add-ons like 'Juggernaut Security and Firewall' (what is simply a 'clone' of free CSF) with Plesk GUI here for $8/p.m. and JUST for 10 domains is really not acceptable.
Bye bye Plesk, god bless you.
Bye bye Plesk, god bless you.