reCaptcha V2 only ? + howto css it

Hi all,

I tried to set google recaptcha V3 keys but it seems elp only accept V2.

Styling the reCaptcha is almost impossible (its code is in a frame coming from google…) but I use this to resize and align left in side bar of divi :
.g-recaptcha {
width: 0;
transform:scale(0.77) !important;
-webkit-transform:scale(0.77) !important;
}