Experiencing issues with the Shein Importer App, any advice?

Hi, does anyone on here use the Shein Importer App? I am having big problems with it, first time i was unable to use it for 3 days, so couldnt work on my shop, was unable to connect due to a server error on their side, I contacted support and they fixed the problem, but now a day later its happened again, same thing, a problem at their end with the server, so its now a total of 4 days ive been unable to work, and this is a paid app! If anyone else has had any issues or can give me advise on how to fix this please let me know! Thanks, Ally