Im pretty sure for the foreseeable...... a donation now will keep you good going forward, as per @pete_w post in site news on donations.
So it's a pretty good time to donate!
Mpu5 or Mpu6?
If either has a flat battery, a fully working pc will not help you.
Edit, just dug about and you have an mpu5. Is the battery ok? What's it reading voltage wise?