Maximm
#1
Hello! I can not connect to the FTP server. 421 error. server is not available.
no longer working 2 days!
I’ve tested your FTP both File Manager and a Client and it works fine here 
Can you try using alternative DNS?
421 normally indicates a local connection issue on your network/router/computer/ISP
Failing this try https://windscribe.com/features/use-for-free