Activation problem

Grrrrrrrr took ages installing nero 2015 had to read a few forum posts about deleteing stuff in the registry etc then after I did get it installed it said the serial had been used to many times even though it said I had 15 days ??? now my genuine nero 12 platinum also says activation failed even though its been installed about 2 months now , ok its nero 12 and ive had it a few yrs so yes ive formatted my pc and upgraded it and changed my hd to a ssd etc , was thinking of upgrading to nero 15 but why bother if im gonna get this kind of shit because I like to format my pc every few months so its at its peak , I cant be the only person who doesn't like to upgrade there pc etc
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