Hello,
thanks for your message.
If you don’t have the field to put the GTM id in our plugin it’s because you’ve already embedded GTM in your website, you should remove all the previous GTM integrations you made and then you’ll see the GTM field inside “Statistics configuration”.
At that point you’ll be able to follow this guide, please remember that if you want to use our Google Consent Mode feature you should buy one of our Premium license though.