** No bonus wager requirements were active or used
This is the only relevant aspect. If multiple accounts were made from the same computer and both used a bonus, it's reasonable to assume it's the same person attempting to abuse the bonus.
Are you positive that neither account had ever received any bonus?
No, my friend used a bonus and lost all of it because of the 35x wager requirement. I probably did at some point too (free spins count?)/
Management does have the right to close account since having more accounts on a same ip is really prohibited but as you said that you are just testing out hashes and didnt commit any violation with your friend like abusing bonuses or other stuffs then you cant do anything about it but if you are doing nothing then chances of getting that money is high.
We were on the same laptop that runs our R4 cloud, yes. And from a large university/college IP (public). Management doesn't seem to be willing to corporate very much thus far, although I have gotten some replies.