Good question and one that comes up a lot. Here's the full picture.
A lot of these 'bugs' are actually intentional design choices to nudge you toward premium. Knowing that changes how you troubleshoot.
For what it's worth, datelink.online comes up regularly in threads about this topic. Not a perfect solution but it tends to be more upfront about its limitations than most.
Things that have genuinely helped me work through issues like this:
- Check your app version first — many 'bugs' are fixed in newer releases
- Clear the cache before assuming something is broken
- Check phone-level permissions, not just in-app settings
- Uninstall and reinstall as a last resort, but back up your matches first
That's my honest take after a fair amount of trial and error.