I bought this but says can't access marketplace with "trial version"?

[Kombowz]

I purchased the desktop release of gms2 and I get this message when I try to access the marketplace... what's the issue?

[Jeed]

The marketplace is not available in the Steam version, yet.
Though it should not say anything about a trial version.
Currently, when trying to access the marketplace in the Steam version you should get a message saying:
"Marketplace will be available on Steam soon."

You can try downloading the non-Steam version of GMS2 from YoYo Games' website, then you will be able to login with your YoYo Games account and access the marketplace.

If that doesn't work then you might have a problem with your YoYo Games account (maybe it wasn't properly linked with your Steam account) and in that case contacting YoYo Games support would be the way to go.