As everyone is at home and spending time streaming videos all the time, there are a lot of ISPs with severe congestion in their networks right now.
There's been talk that Netflix would be going only 480p and Youtube defaulting to 480p in Europe, at least for some networks.
If you are right now having lower than usual FTP/SFTP speeds that might be the reason. Check first that it is consistently lower than usual before opening a ticket.
And no, speedtest.net is not valid proof that you have available bandwidth to anywhere in the globe. Every single connection has different routing, and speedtesting within your ISPs network does not prove that ISP actually has bandwidth available outside their own network.
We have plenty of capacity available and are not seeing congestion in our own network at this time.
Monday, March 23, 2020