Footlocker EU releases go for a very long time, much longer than a normal Shopify drop. As a result, it may seem like Kodai is stuck on a step during checkout. However, rest assured, this is perfectly normal and is because of site overload and lag. Just wait it out and it will move on by itself eventually.
You can always take note of the retry counter next to the task log:
e.g. “ Submitting Details…”.