Users are encountering persistent 'Submission Failed' errors when trying to e-file Form 10A on the Income Tax portal, often citing 'no response from the server' or 'system error'. While some users have reported temporary resolutions or that the issue resolved itself after a day, many are still seeking guidance. Specific problems include data not saving and errors like 'Invalid Flag' or mismatches between PAN and incorporation dates, with the Income Tax helpdesk reportedly unhelpful.