Hello there,
Hope your having a wonderful day,
I know this has been heavily repeated but it is still a needed feature. Please add support for ftp file upload using a platform like filezilla. Filezilla is free and open source so i don't know what else the problem is. Yes the files may contain viruses but just use a free virus scanner like virustotal and block even if one of the engine detected the file being a virus.
There are a lot of free minecraft hosting provider out there but aternos is always mentioned as the king of free hosting provider with the only major problem being the ftp file upload. It would help a ton if this feature was implemented.
Thanks a lot for taking the time to read my post