Reboot requires registration on network.

That's my problem. Everytime I have to reboot, my phone forgets my network and I have to register on it. I'm on CM12.1 nightlies.

SM-G9287 Registration for Warranty Coverage?

To get covered under 1 yr warranty from manufacture we have to register this product for coverage. Companies like cpscentral and portectyourbubble who cover drop,spill and other things say that for the first year if any malfunction happens we have to reach out to Samsung.Problem is that I am not seeing a way to register this product as I am not sure which Samsung site to use to register.
Google search says this model is released from Taiwan so should be go that site to register? I cant give any Taiwan Address to register as I don't leave there. The seller from ebay didnt respond to the question so i am kind unsure what to do. Any Ideas?

(Square trade charges 138 dollars per year to cover accidental drop and spills for phones bought from ebay which is very high and its better to use that money for repair in case the unfortunate event happens)