features do not work on IE and Edge

Hi, recently bought the Arcane theme and it’s works great but some features do not work in IE and Edge.

– recaptcha doesn’t show at all.
– accepting members to a team doesn’t work and most buttons do not either.

I disabled all other plugins I had install to see if one of them would create a conflict but with only the plugins the theme makes us install it still won’t work. You say cross-browser compatible in the description. Please help me fix this.

EDIT: Forgot to say I’m running WordPress 4.95