Good morning/afternoon/ night to everyone. I tried to verify my age last night and it showed the 18+ badge, However suddenly it asked me to verify my age again the normal yellow badge. When I pressed on the age verification again , the age verification disappeared and now it’s invisible , and I am a bit confused about it 
Try to edit your profile, if the age verification process has correctly identified you as being over the age of 18, it should have an option to show the “Vertified 18+” tag.
If the option is not in the edit profile options, then the age verification process has failed to identify you as being over the age of 18. You will have to make a support ticket and have them look into it and correct the error.
You make a support ticket here: https://vrch.at/support