Technically your comment is incorrect. Intuit has NOT said they will stop supporting Premier and Pro versions, only that they will stop selling new subscriptions. While we expect the support to stop in the next year or two, it has not been announced and ending of support is purely speculative. 

Support for older versions of QuickBooks has ended. You can purchase a subscription to QuickBooks 2024 Pro or Premier from Intuit until the end of June. Subscriptions to Enterprise can be purchased from Intuit, or from a QuickBooks reseller. 

That said, Enterprise will work with Timeslips. HOWEVER, Timeslips 2020 may not support QuickBooks Enterprise 2024 as only TImeslips Premium officicially supports any version of QuickBooks 2024. 

Happy to have a direct discussion with you. You can reach me at cschwartz AT 3545consulting.com