I'm having that problem on my mobile's Firefox browser, but not on my laptop's. My impression is that there are two problems:
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There's a first computing-based check from Cloudflare. The mobile is too slow to pass it in time, so it's redirected to the captchas. My laptop is fast enough, so I don't see captchas there.
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Something with Ublock or Firefox's Enhanced Tracking Protection or similar settings breaks the captchas. So I'm stuck in a loop. Though I heard other users who were not stuck even with ETP and Ublock...
Maybe worth trying to access via Tor Browser, or a clean profile on Firefox.