Yoast SEO not updating properly

Hello,

I hope you had a great weekend!:)

I have encountered several issues with Yoast SEO:

1) The website main page meta description doesn’t change (https://imgur.com/a/XMUt4dd) although it’s set to the different description on Yoast SEO (https://imgur.com/a/olJs0qi)

2) How I can add more links as an example here (https://imgur.com/a/fCGhtUE) “How It Works” “You Need To Know” etc.
My website only shows one link “Submit” (https://imgur.com/a/Yvyhn8J)

3) I’ve tried changing the Knowledge graph & schema.org section but it’s empty. What should I do to make it look like this one? (https://imgur.com/a/vXMr9ad)

I’ve tried deleting the cache but it didn’t work.

Could you please help me with these issues?

Thank you!

Thank you Bettina!