API Server Can’t Be Reached

So i bought and paid for your woodmart theme to replace the flatsome theme my company uses for ecommerce and i cant even get the theme to install and we have never had issues like this with wordpress in the past 10 years. Really dissapointed as this theme came recommended and now we have screetched to a halt and cant do anything. I plug in our purchase code and it just gives me a red error. I attached a photo for reference. We really need this fixed or just give us a refund and we will go back to flatsome thanks