Runkeeper stopped synching

Since I have joined yesterday using my Runkeeper, synching has stopped and does not show any progress. What should I do to sync please?
Many thanks in advance

The Runkeeper connection is functional, so either you’ll start seeing activities sync in or the activities you’re expecting to arrive in CityStrides aren’t allowed (aren’t running/walking/hiking type activities).

Let me know what you see after a few hours.

Thank you for your prompt reply. It is finally updating but very slow. I might become a supporter hoping it will help with the sync.