Lost Compoment

Hi,

I have three problems :/.

1. On the Unity 2021 version, I have a license error and o logs

2.When i want to open project on version 2020 my Unity Hub won't open my projects at all and I have to walk through the scenes (I can't really show screen of this problem. I can just say that it refresh and wont open the project).

1. When I have an open project, I have lost components such as rigidbody and box colider.

please help.