Thank you very much for your response!
This definitily helped, however it raised some more/other questions
So did I get you right, that it would be the better option to get the Affinity Store Version (= the version I can download on the website, right?)? Are there any differences to the Microsoft store version regarding UI, functionalities, etc.? I‘m really sorry for all my questions - I am totally new to this. That is way I would like to ask you what exactly you mean by „sandboxed“? Is it a disadvantage?
Thank you very much for the link. Can you already tell when there will be an improved UI?
Again, thank you so much for your help!