Watch face goes blank

Until today, the apple watch worked continually. Now, the watch face turns off after about 30 seconds. I would like to return to continual operation.

I counted the seconds, yes, it turns off after 15 seconds.

It turns out that the theater face masks was on my watch. I googled it and asked what the masks were. In the answer it told me how to turn it off. My watch is not running normally.

correction: “is NOW running normally”

Thanks, I missed that.