VPS disconnects from RDP Win2008 indefinitely?

Question

Windows Server

Good afternoon!
I rented a VPS under Win2008 Server to run Windows programs, I connect via RDP with the given login password, I also set RDP access only for my home IP.
The problem is that sometimes RDP disconnects and won't let you connect again for an indefinite amount of time (I haven't figured out how much yet, but definitely more than an hour!). After some time - I can connect again (disconnects at night - I go to sleep - it works in the morning). VPS is working at this time. I also tried rebooting - then you can connect immediately, and do not wait until it "lets you go".
I didn’t have anything to do with Win2008 before, I don’t even know where to look to understand the reasons, I looked at the logs, at about the time of my disconnection, some service was connecting.
Where to look and dig?. I need uninterrupted access via RDP.

An account was successfully logged on.

Subject:
  Security ID:		SYSTEM
  Account Name:		VPS1633380$
  Account Domain:		WORKGROUP
  Logon ID:		0x3e7

Logon Type:			5

New Logon:
  Security ID:		SYSTEM
  Account Name:		SYSTEM
  Account Domain:		NT AUTHORITY
  Logon ID:		0x3e7
  Logon GUID:		{00000000-0000-0000-0000-000000000000}

Process Information:
  Process ID:		0x1f4
  Process Name:		C:\Windows\System32\services.exe

Network Information:
  Workstation Name:	
  Source Network Address:	-
  Source Port:		-

Detailed Authentication Information:
  Logon Process:		Advapi  
  Authentication Package:	Negotiate
  Transited Services:	-
  Package Name (NTLM only):	-
  Key Length:		0

Answer 1

Issue resolved. The problem was on the side of the Webtropia hoster (3rd time).
As a result, I will write a short review about them, for posterity.
VPS Windows 2008 r2, 19.99 euros.
June 3 - bill paid.
June 4 - after verification, the VPS was connected and informed - work.
There was no connection via RDP, for a day he proved to technical support that port 3389 was closed, for which he received letters "But we have it open, look." The answers from their side were with an interval of 6-12 hours.
As a result of correspondence, a day later, technical support offered to reinstall my VPS, I gave access, and they did it. But it didn't help.

the reinstall is finished.
Please check it now.

After that, another attempt, and the connection appeared:

I have found a problem regarding the network configuration, you should be able to connect to your Server now:
https://vgy.me/TR4Gh7.png
Please note, that lately there has been a new Update for Windows Server 2008 which fixes an error regarding the RDP connections and the CredSSP authentication. Please run the Windows Update as soon as possible when you are able to log into your Server now.

The joy was short-lived, from 5 to 9 I periodically logged in, and RDP was stably turned off at a random time for a random period (whatever I tried), again 3 days of correspondence, and as a result a letter:
In total, "only" a week and I can receive the paid service in full.
Draw your own conclusions...