Not really, no, especially if they were working previously. Ensure you have downloaded the latest patches from this
thread.
Firstly, I recommend familiarizing yourself with Switch terminology & general hacking by following this
guide. I'm not saying to hack your console from scratch but try following the steps or at least understanding what they do so you know how it all works. Secondly, Hekate is a payload which you will understand better if you follow the aforementioned guide but simply put, its a file that you send to the console via USB from your computer, phone, dongle, etc. Once you understand how to send payloads, you can download the latest Hekate from
here.
Yes, it might be an issue but I believe there is a way to deregister Nintendo Accounts from their website so that might be worth checking out. I think you can still perform a factory reset online if not through system settings, you can do it via Maintenance Mode which you enter by holding volume + and - when turning the console on.