HI Donna. I'm Greg, an installation specialist, 10 years awarded Windows MVP, and Volunteer Moderator, here to help you.
- See if you can System Restore to a point before the problem began following this guide: https://www.windowscentral.com/how-use-system-r...
If the problem repeats then check which Windows Updates were installed at Settings > Update & Security > Windows Updates > Update History, uninstall them there or System Restore again, then immediately check for and block the Updates with the Hide Updates tool explained here: https://www.howtogeek.com/223864/how-to-uninsta...
- If that doesn't help then you can reset the app at Settings > Apps > Apps & Features > Microsoft Jigsaw > Advanced Options > Reset or Repair.
- If that doesn't work then uninstall the app in the same place, restart PC, then reinstall it from MS Store Hub (three dots at top right of Store app) > My Library.
- Adjust the screen resolution until it fits and looks best at Settings > System > Display.
- Make sure Scaling is set to 100% in the Display settings above.
I hope this helps. Feel free to ask back any questions and keep me posted. If you'll wait to rate whether my post resolved your problem, I will keep working with you until it's resolved.
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