We've noticed that Saleforce can only support up to 5 access tokens per user, which implies in Qlik Application Automation you can only connect up to 5 live connections with the same user.
Adding a 6th connection will disconnect the oldest data source linked to that user.
reference: https://salesforce.stackexchange.com/questions/65590/connected-app-avoiding-a-limit-on-a-number-of-i...