The error that there is no request to open the passenger doors on jetways and walk-in has not yet been solved. Passengers begin boarding or deboarding even when the doors are not open. I tested this at different airports and with different aircraft (not PMDG 777, but A321 or B747, among others).
With “Stairs” it is functioning only if you activate "enter crew". Crew requests open the doors correctly.
In many other cases it doesn't work. I discovered this in various tests, which I won't explain all here.
No matter: this is a fundamental question. I don't think it's my job as a paying customer to find the bugs in the software I paid for. If Umberto thinks that support for FSX and GSX Level 2 is no longer current, then that's ok. But then the existing errors should be corrected. With every update that is offered to me, new errors arise that are not fixed. That is not serious and I will not accept that as a paying customer. Umberto: There are ways to take action against this dubious practice. I think you don't want to get involved in this.
We can discuss individual points. But I expect that I will get what I paid for.
I will make my couatl.log available if you can assure me that you will look into it