Shared forms not appearing on preview

Hi all,

I have recently been given a replacement laptop. On my previous machine, on Forms, I could see 'shared forms', those that colleagues have shared with me. On the new machine, logged into the same account, this option no longer appears, just 'my forms'. 

I have noticed that the id is Forms (preview), not forms. 

Any help appreciated, as I need to get to those forms!

Many thanks,

Alex.