How can I find out if my referrals are logged in V2 if I do not have access to the claim rewards section?

you can claim in v2 of the app which is now live on the play store, App Store coming shortly. Please read this medium article fully which explains everything https://legionnetwork.medium.com/legion-super-app-v2-launches-be4bea482a27

The most important thing is making sure they signed into V2. The Claim Rewards button is currently disabled for all users. As long as you have the Approved badge next to your name, you're safe. The claim will be available before claim date.