Thanks to Nilski98, MichaW, Fin e Lightspeed for their prompt reply
.
I will try to answer back all of you together.
My problems occur mainly during the events/races (8-10 pm Saturday and Monday)
.
I use Windows 11 Home (updated 22H2) and my hardware is a recent one and (very) fast too.
I have updated and reinstalled KBB/GTR2 several times with the autoupdater.
I have reinstalled many times the patches for 4GB, lobby connection and advanced setup.
I have loaded the track for the next event (Highspeedring) manually.
Today at 11.30 a.m. the situation in the lobby looked as follows:
1 - I had no problem entering servers 1,2,4,5 and 6;
2 - I entered server 7 but was kicked back to lobby due to "booted as possible cheat";
3 - I could not enter servers 3 and 8 as the key "join" was not working.
This situation is very strange
and has been going on for at least two months.
Thank you again to all of you for your support. I appreciate it very much!
FER BEL - FLB
P.S. in my GTR2 folder both a d3d9.dll and a D3DX9_41.dll are present. Is it the same for you?