Blending modes suddenly not workin in Photoshop 2022

[Deborah54]

I am using a macbook pro 16 inch 2019. my os is big sur 11.6.4. suddenly my layers blending modes are not working in photoshop. when i try to use them nothing happens. i have tried using various documents and its all the same. nothing has changed from yesterday when they were working. can anyone assist? much thanks!

[TheDigitalDog]

Can't hurt, might fix: Try resetting your Photoshop preferences. Press and hold Option+Command+Shift (Mac OS) immediately after launching Photoshop. You will be prompted to delete the current settings.

(Mac OS only) Open the Preferences folder in the Library folder*, and drag the Adobe Photoshop CS Settings folder to the Trash or another location.

Also: https://helpx.adobe.com/photoshop/using/preferences.html

*To manually delete Photoshop preferences:
Quit Photoshop.
Navigate to Photoshop's Preferences folder:
MacOS: Users/[user name]/Library/Preferences/Adobe Photoshop [version] Settings