Hi there!
What is being pointed out above is the search feature of the forum.
This subject has been brought up many times.
Do a search for the error code you are receiving or “gaming services”.
There is a section of the forum for bugs and issues located here: #bugs-and-issues
After going to that section, click on the search icon and the search will be restricted to that section.
Gaming Services:
Search results for ‘gaming services category:200’ - Microsoft Flight Simulator Forums
There is also a topic where MSFS launches the MS Store for Gaming Services install: