It's not you, it's me. No wait. It's not me it's mobile phones. Okay, story time:
You're not the only one. And it's annoying. And I'm sorry.
The numeric keyboard on iphones is terrible for entering numbers. So I made the keypad component you use the enter scores. I like it a lot. It was a "000" key which often makes life easier.
Normally tablets and phones have a delay after you click something. This is to facilitate the drag/scroll events on phones.
However that delay made entering scores feel super janky because the number wouldn't how up until 300ms after you clicked. To make things feel good I disabled the normal click delay on tablets/phones and everything felt nice and snappy.
But! As a result it's impossible to start a drag action by placing your finger on one of the keypad buttons. When I made the keypad there were no selfie leagues and I made it for entering scores on tablets. Bigger screen, no scrolling necessary. No big deal.
Now there are selfie leagues. Smaller screens and scrolling is almost always necessary because the photo is displayed on the same page.
I don't have a good solution yet, but I'll come up with something