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This App Warns You if Someone Is Wearing Smart Glasses Nearby - 404media
(www.404media.co)
This is a most excellent place for technology news and articles.
Same here.
Go to Android Developer Settings > Display Cutout, set it to one of the other options and it should shift the app down a bit so you can access the buttons. (change it back after ofc)
I used "waterfall cutout" but others might work depending on your phone model. Afaik no other fix is possible without the app's code itself being modified.