Change pricing structure
I'd pay for XTRA if who has looked at my profile was part of it. Putting who has looked at you behind a paywall is what killed other Websites and Apps.
Or what about a basic one with
Who has looked at profile
All the profile filters
You might find that quite a few go for it.
Years ago, BT reduced their prices and lo/behold people used their phone more and the company had more revenue and profit.