Blizz already said that new people claiming it, the problem is fixed. If you did it early, you are screwed and the fix is not retroactive. They are telling you to go touch grass.
Previously, players were experiencing issues with receiving rewards from the Season of Blood Battle Pass and Seasonal Journey. We have rolled out a fix for these issues that will begin to take effect over the next hour or so. Do note that Season Journey progress acquired prior to the release of this fix will not apply retroactively. You will lose no progress made on your Battle Pass, and now can claim all earned rewards from your Tiers. You should also now see progress incrementing correctly on Season Journey tasks.
Thank you for your feedback and patience.