I've been invited to a SharePoint group by a company we work with, let's say apples.com
I have email addresses with both my company (oranges.com) and them.
They invited me to this group using both my email addresses. I only use my oranges.com email, so I want to add the group to that.
But I can't find the group in the list of groups.
If I go to the online sharepoint group page, https://outlook.office365.com/people/group/apples/groupname, I get redirected to a different group (the only one that I do have, unrelated) and see a banner that says 'this item does not exist or is no longer available'
It's not a Teams-group, it's a SharePoint group.
They do clearly see my email address among the invited list.
I had no problem accepting the invitation with my apples.com email, but again, i don't use that.
This is what it looks like for me:

This is what they see: 

I clearly have been invited with the oranges.com email address, the screen shows.
Who understands this and can explain what to do?
Thanks a lot!
