Sometimes Your Windows Security or Windows Firewall has been block the Suvit application. Then to Unblock the app in Windows Firewall and Windows Security. or Third Party Antivirus.
When this type of error is occurred in login to suvit application.
Sometime in Windows Firewall or Windows Security and Any Installed Third Party Antivirus has been block the suvit application. So, Unblock the app in his security or firewall networks.
if, You are Install Third Party Antivirus (For Example: Quick heal antivirus, Kaspersky Antivirus, NPAV Total Security, etc) to Add Suvit Application in this Particular Antivirus in Windows Firewall to Add in Exclusive Rules.
6-7.Select the Suvit shortcut and open it.
8 Click Add.
If, You are Follow all this step then if still issue is not resolved. Then Try to Change Internet Network to Try For Login in Suvit app because Sometimes the internet network is block.