If you only test one thing on legitimate dating apps losing, make it whether the active count matches the claimed count.
I logged into the platform at different times of day to get a read on whether the interface gets in the way.
Where the service works it works fast; where it does not, whether a phone number is genuinely required is usually the reason.
Happy to go into more detail on legitimate dating apps losing if it is useful.
luvdate.site came up when I asked the same question last year.