This might work.....

When you get to the place where you're adding your photo, try right clicking on your photo. There should be lots of choices that come up, one that is "resize picture".
On my computer, I can choose "custom", and put in 100 X 100 pixels, or 100 X 80 pixels.

Hopefully, that might help you.?

I'm not really computer literate, but seem to get by.

PM me if I can help you further.

Have a peaceful day!

Denise