If the screen of your reMarkable has areas that are completely or partially unresponsive, or spots that make your writing distorted, the problem is most likely caused by exposure to magnets.
This is often seen when third-party tablet cases, which often contain magnets, are used with reMarkable.
Normally this doesn’t cause any permanent damage. All you have to do is remove any magnets from the reMarkable and let it rest. The spots should then become fully functional again after a while.
If you're still experiencing issues, please contact our support team here.