I guess I'm just too lowly of a simple blue collar guy to understand how serious the threat is for any IOT aquarium items to be hacked. Out of all of the "smart" items, I just couldn't imagine aquariums are that much of a gateway. Sure you hear about tv's with cameras, or Alexa's or what not being compromised. Those things are much more prevalent in homes.
I guess I get having some sort of firewall built in for this kind of prevention. But let's be real, the overall size of the consumer base with said aquarium equipment is relatively so small that most hackers probably wouldn't waste the time or the risk for such a small target group. Again, my ignorance could get the best of me, but I just can't see it. You would think there'd be all kinds of posts here of the horror stories from being hacked (or robbed lol).
As it has been said and stressed numerous times now, the issue is companies treating these requests like you're asking for CIA clearance. I get laws may be in play (please don't get me started about our awesome legal system), but, and I say this too often, sometimes common sense must prevail. Someone reaching out in good faith (I could give a rats but how long it took), about an issue like this should be quickly resolved without refusal to cooperate. If any company sells products like this, they should expect to have these issues and have policies(preferably customer friendly) to help rectify.
The thing to note, for everyone who has bought these products and understands the hassle of "linking" and setting up, you can't honestly say you didn't think about it before selling. Good God. Stop being lazy and unlink your products before selling. I personally went through it with a 2nd hand apex. Fortunately the seller was local and was a phone call away to help with this. That was still a hassle. Makes me never forget what a hassle it was and if I were ever to sell, it'll be one of the 1st things I think about. And I appreciate those that go out of their way to let buyers know ahead of time that it was done as some here have done with products I bought in the classifieds. So many failures, but it doesn't start with the buyer IMHO.