Numerous communication issues with the API

Hi,

We have a problem with the API. Numerous communication issues appear for the last 24 hours in the logs of our .NET application hosted on Azure.
• System.Net.WebException: The operation has timed out
• System.Net.WebException: The remote server returned an error: (401) Unauthorized.
• System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a send
• System.Net.WebException: Unable to connect to the remote server —> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 194.75.36.22:443

We have about 10 of such exceptions on a daily basis. Today reviewing the logs I noticed more than 1300 errors. As you can see, there are a few types, but all of them are somehow related to the network interaction. We did not make any changes in the configuration for the last 24 hours, including the API credentials which stay the same for a long time.