I am using Putty and Filezilla to manage my server. Yesterday I was connecting with Putty and Filezilla well But today I can't acess my server. Using the same connections for everything. The same private key. This is what Putty says.

And this is what Filezilla says:
Error: Can't connect to the server
Pls help me solve this I don't know what is causing this errors on both programs. Since 2 programs are failing at the same time I think is it a server problem. I tried making new connections but it also didn't work.