If you are using Kaseya VSA R7, R8 or R9 you can disable 2FA in the Database.
Open SQL Management Studio. Navigate to ksubscribers > Tables > dbo.AA_Settings
Change the Value of TFALogonDisabled to 1
This will effectively disable the 2FA requirement for your VSA Server. To re-enable 2FA change the value to 0.
Note: You can download SQL Management Studio 2014 here.