The amount you spent on the compendium will be credited towards the full book. So you should see the $29.99 price tag for the full book reduced to $10.00, which will unlock all the content outside the compendium
Same place you'd go to buy the full book normally. In the case of Out of the Abyss, here at the top. Just about the blue 'Add to Cart' button, it should say something to the effect of $29.99 $10.00
I purchased OotA as compendium only by mistake, is there a way to pay the difference and upgrade to the full adventure?
The amount you spent on the compendium will be credited towards the full book. So you should see the $29.99 price tag for the full book reduced to $10.00, which will unlock all the content outside the compendium
Find my D&D Beyond articles here
Yes, but where do I need to go on the site to buy it?
Same place you'd go to buy the full book normally. In the case of Out of the Abyss, here at the top. Just about the blue 'Add to Cart' button, it should say something to the effect of
$29.99$10.00Find my D&D Beyond articles here