If you both promised to drop the app and remain exclusive then there are some things that need discussing but cheating may not necessarily be one of them.
Also, please do not say "I do not access it" because you do! Remove doubt from your relationship today! And swipe right on everyone with a boost.
Bumble also generates revenue through its premium service, in which users are provided with more swipes and other additional interactions.
If they are misrepresenting themselves in their pictures they will be called on it.