Anonymous participant oh I see. For extension needs to be in a regular account. There is no mandatory requirement to show your bank account on arrival and extremely rare to be asked on arrival. I would keep it on the higher rate account if not extending at an IO. Much easier to do a.border run
You will need to check with the embassy you are applying from. Some embassies consider immediately accessible as having no need to transfer funds into the account. You can transfer funds back to the higher rate account after approval. Transfer to regular account for the application.
Some embassies require employment info for SPers. You can detail your employment in a letter and highlight payments from clients/employer on the bank statement.
You can not continue the application process elsewhere or attend another embassy for an interview. Try to reschedule the interview to a later date or explain what happened, cancel your application and apply in Indonesia.