Not syncing Runkeeper to Strava

[mstorus]

As of sometime in early 2024, I can't sync Runkeeper to Strava anymore. When I click the Synchronize button, it says Checking Strava, and then it claims to be complete, but it doesn't show any activities since February 2024.

I attempted to revoke authorizations from both Strava and Runkeeper (Asics), and then reauthorize, but it didn't help. Separately, I can't unlink Strava from the Tapiriik website, the network shows an HTTP 500 Internal Server error from Tapiriik. I have a workaround to re-do authorization, but unfortunately it still doesn't solve my problem of syncing Runkeeper to Strava.

Steps to reproduce:

1. Visit both Runkeeper and Strava 's app integration pages directly and revoke authorizations to Tapiriik.
2. On the Tapiriik website, disconnect Runkeeper successfully.
3. Click the sync button, which will report that "There was a problem accessing your Strava account. Use the button below to reauthorize tapiriik to access your account".
4. Click the button to reauthorize Strava successfully.
5. Click the Synchronize button again on Tapiriik. It says Checking Strava for a while, and then completes.

Expected result:

1. I expected after Synchronizing that my recent Runkeeper activities would be uploaded to Strava.

Actual result:

1. My recent Runkeeper activities are not synched to Strava.
2. I see several network logs to https://tapiriik.com/sync/status and https://tapiriik.com/sync/activity which return an HTTP 200 success. But it's not actually picking up any of my Runkeeper activities.