My opinion has changed drastically. From today, it did not work anymore as intended. It’s up-to-date, I changed nothing within MSFS and there was no update for MSFS or any other add-on.
The hassle starts at Dhaka Airport with no getting GPU, and now I have a never ending GSX Pro Menu Loading screen. GSX Pro isn’t worth to buy!
Now I have to use standard Push back and no boarding nor GPU transfer. 
And yes, i restarted Couatl for several times and it’s up to date!