Is there any way for fix this issue...? I remember when using Filesonic sometimes when they IP got blocked, they sent email to host that blocked their IP. maybe they will un-block it or maybe not, but at least trying is better than do nothing

And you should limited RU, x GB/user / day. Some users certainly using this feature without thinking others and all effects. .
Thanks, we will think about that.

RU mostly done by spammers/leechers. good thing Lumfile do not have PPD, if not then we might been affected with slow upload speed issue caused by them.

pro uploaders will use RDP/VPS/dedi.
We added CA server today and tomorrow. NL server will add on Thursday