Here are enom's instructions on how to handle it:
https://www.enom.com/kb/kb/kb_247_un...e-reseller.htm
Since the whois details are blocked you will have to know who the registrant is. I don't know if they can give you any help or not otherwise.
If your actual registrar had gone out of business ICANN would have handled this for you but since you are using an enom reseller the real registrar is still in business so you have to deal with them.
As for registrar recommendations, I have been using namecheap.com for my personal stuff but I think that with the nature of your problem you should probably stay within the enom family at least until your current situation is resolved.