My widgets have turned grey after iOS 14 update

I tried doing this but it did not work. Some of my pictures I made into widgets are working although some of them are still not.. I restarted my phone and turned low power mode off but the widgets are still grey even if I delete the widget and add it again. Some pictures are showing and some aren’t even though the Widgetsmith app is allowing me to use all of the photos, even the ones that are showing up as grey

Reboot and charge your iPhone then switch Low Power Mode OFF.

Widgetsmith is not an Apple product, best you ask the app developer on their website/forum for support.