Q: I don't understand the logic.
So if I buy 5 coupons under 1 email will only get 500 words with 1 user and 20 domains. But the same puchase under 5 different accounts (use 5 email accounts), I can get 500 keywords over 100 domains and 5 users.
Why can't you just let me merge the codes into one account rather than setting up 5 accounts to get the extra domains and users?
Really not very well thought through at the moment.

Verified purchaser
I purchased 5 codes but I am reconsidering as 20 domains may not be enough. I may cancel 2-3 and add new accounts. A bit pointless and a waste of time tbh.
I agree on this, the reason I'm not buying it because it does not stack very well.
Yup, they lost me on that AND that it only includes 1 user. Users don't appear to cost anything yet they made it only 1 user vs unlimited for any paid plan. 1 vs unlimited? Pretty steep.