lost login session at submit Archived · read-only

I have an issue that at the time i submit a map (even if it up uploaded fast as i tested it with 2 different connections) everything looks right and seems to work fine until i click submit. then it says "Error: Lost Login Session. Please try again." I have tried this in both up to date firefox and chrome.

Please help i cant upload anything.

I have the same issue, dont know what to do