I’ve looked at other alternatives and found https://app.startinfinity.com/. They have very similar features like Seatable. The most interesting feature for teams like us who work from inside Microsoft Sharepoint, is the ability to embed editable iframes from Infinity boards. This is useful as the majority of the team needs to work on a particular table with a simple view. One or two people who manage the database can worry about the complex parts of the database.
I must say that I feel very disappointed that there seems no solution to this problem in Seatable Cloud, despite that Seatable seems more powerful than Infinity. Sadly, as Seatable Cloud is not editable inside Sharepoint, it does not match our workflow and so it is not a good fit for us. Running Seatable server is too much for us at this stage - we looking for simple solutions rather than complicated ones! 
