I noticed the same thing, was about to start the 3rd task - but all the tasks are gone now. I'll wait and see what happens - maybe some misty glitch ;)
And it's working again 
- thanks Misty 
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I was literally finishing up my second task and I woke up the next morning and now the tasks are removed for me. I go to the Raid: Shadow Legends and now it just says "Play For Free".