There was an error authenticating with the Marketplace. Please try again later or contact technical support for assistance.

Our Marketplace server received an unexpected response from your community. Please ensure your community is up to date and web accessible (localhost installations are not supported) and contact technical support if the issue persists. (server_error)

 

this is the error i get when trying to access the market place please help as i can not figure this out and need it resolved asap

• OK

It looks like you have DDOS protection that is blocking communication with your community. You will need to make sure that HTTP requests can be received vis HTTP POST to /index.php?app=core&module=system&controller=marketplace

I had the same issue. I have Cloudflare and TLS 1.3 was in the SSL section. Changed to TSL 1.2 version and everything worked

I fixed mine by whitelisting my IP address on StackPath.