No no no please don’t rename folders in the Onestore directory. That will make MSFS the addon is not properly installed.
Your content.xml is here:
Sim from MS Store:
%localAppData%\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache
Sim from Steam:
%appData%\Microsoft Flight Simulator
(copy and paste those directories into Windows Explorer and should take you there)
First, make a backup of the Content.xml. Note that if you mess it up, you can delete the Content.xml file and MSFS will recreate it, but will probably have the same problem you’re experiencing.
Open the xml file in an editor (I’m using Notepad++), locate the addon name, something like “meigs-field-chicago” or similar.
Move it to the very top of the Content.xml file, here’s a screenshot of an example:
Restart MSFS and try again! Fingers crossed!