You now have a video showing you everything. I really don’t know how to help you further.
Errors are reported in red and are not related to our plugin.
EDIT: the best thing is if you ask for a refund. Please follow the instructions here: https://marketplacehelp.epicgames.com/s/article/How-do-I-request-a-refund-for-a-Marketplace-product-I-ve-purchased