Hi @LoneWolf47,
The error that Flow can't install error is caused by the PVA Flow couldn't test directly in Flow, if testing it should in the Power Virtual Agents pannel.
The second screenshot shows the item ID you provided is invalid, the item ID in the Get item is a Unique ID like "0938c11c-fd4e-ea11-a812-000d3a80cf8d", if you want to get the item in CDS, you should provide valid item ID.
Best Regards,
Community Support Team _ Lin Tu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.