Xbox Rewards Quest not updating achievements

I would suggest to email Microsoft Rewards Support if your achievement progress doesn't update. They should be able to help you if the quest doesn't update after 48 hours.

You're not the only one to experience trouble with completing quests. Sometimes the quests can be perfect and update instantly or it could be delayed until after the deadline. What I usually do if a quest doesn't update properly is, take a picture of the
quest/quest progress, send an email to Microsoft Rewards support, and explain the situation. They can be quick to reply or it might take a bit of time before you get credit.

For the quest that requires you to reach a number of achievements, Microsoft Rewards support will need some screenshots/pictures of the achievements you earned during the quest duration. I used the Xbox app on PC to take screenshots but you could do any
other method that will have the right information like your gamertag/date of achievement.

It's ultimately up to you if you want to continue using the free rewards program. It might not always be perfect but I'm not perfect either. Glitches/bugs are sometimes hard to find/fix but it's very easy to send an email to support. I always had a great,
fast, professional experience whenever I need to rely on support. I use Microsoft Rewards daily and I don't see myself quitting anytime soon.

Some times you have to click it and wait than left page than it should green icon done.

Read it again...is it asking you to get the achievements on different days??

You can always try another achievement or contact reward support

https://support.microsoft.com/en-us/supportrequestform/cf50b787-a987-a7ff-133c-6c4e3f638013