Hi. I m posting again my experience on this matter.
In my case, when AIMA opened the portal for me, i closed it next day by mistake. So my lawyer was sending emails on daily basis to AIMA to open the portal but AIMA never did. So after 2 months, i asked my lawyer to go to one of AIMA offices called "loja do cidadao, based on another lawyer recommendation, and she was able to open the portal for me on same day. I paid some fee since the lawyer had to wait maybe half a day. And the. was able to submit documents again on AIMA portal
I dont know which loja the lawyer went to. I sent her an email and didnt hear back. But any loja should do i guess