Hi @CAPBROTONS, welcome to the forum!
This topic may be of assistance:
https://forums.flightsimulator.com/t/marketplace-greyed-out/339646
Also the FAQ located here:
https://flightsimulator.zendesk.com/hc/en-us/articles/360017006900-All-versions-The-Marketplace-tab-and-or-Online-services-are-grayed-out-