Microsoft Rewards Program not letting me earn points anymore.

Rewards has its own support.

You find the link to contact them at the bottom of the Rewards site.

Which points are you referring to? Microsoft points were discontinued in 2013. Are you referring to the credits you earn from the Xbox Rewards program or Microsoft Rewards program?

No. The Microsoft Rewards program have the same type of offers as the Xbox Rewards program. You can earn 1 point for every $1 you spend at the Microsoft Store and then you earn points for doing things like using Bing for searches and taking their quizzes.

The only legit ways of earning free points is through the Xbox Rewards Program or Bing Rewards program if they are available in your region. However, with Microsoft retiring the points system, the Xbox Rewards program will not longer be offering points as
of August 1.

Since the VIP program was only available on the Xbox Rewards program it's not available through the Microsoft Rewards program. If you had a star level in the Xbox Rewards program that was transferred to the Microsoft Rewards program, you'll keep those benefits
until December 31, 2018. Otherwise the Microsoft Rewards program has 2 tiers. Level 1 and Level 2. You have to earn a certain amount of points each month to reach level 2 (which should only take a couple of days) and then you earn discounts on the items you
can redeem from the program and earn up to 20 points back on every $1.00 you spend.