How to fix 3rd party aircraft, that are unresponsive (after second time loading)

Are you having issues with third party aircraft being unresponsive for hardware input (after second time loading a flight)? For example Aerosofts CRJ, FBW A32NX (experimental build), MediaHypeTrains H135 or Working Titles CJ4?

Here is a possible solution:
Go to User/Documents and see if there is a SimConnect.cfg file
open that with any text editor
change the first line from [SimConnect] to [SimConnect.0] and save

I am not the one that found this fix, but I thought sharing this knowledge can help a lot of people, because the cause is not quite obvious and the issue itself can be really frustrating (especially if you bought an aircraft for 50€ like me, that was only working exactly one time after each new install).

I hope this fixes the issue for you as well!
Happy flying and greetings from Germany,
Tim

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Could you please attach a screenshot with the line [SimConnect] ?

i have nothing in C:user/ documents/simconnect … ?
where i can found it ?? in other part of my instalaltion PC

FS 2020 on J:\ and a part on C: