It is not right that Nitro removes files because of inactivity, although I have continuous premium subscription and I am an uploader. I am using nitro for few years (as primary host), but because of mentioned problem and md5 removing files I seriously think to leave nitroflare.
This month is worse compared to others. I also extended my premium subscription via referral link from second account but didn't got sale reward. So nitroflare's affiliate algorithm is not really fair. I hope that will change in the future.