Late fee for 3B

A user is experiencing an issue where the system is calculating a late fee for their April GSTR 3B return, even though their previous year's turnover was below 5 crore. Other users have confirmed this is likely due to a portal update issue and advised waiting for the system to be updated. It's also noted that no late fees have been charged so far for GSTR 3B, and if a return was filed with a late fee, a refund is not possible.