Hey all, Hoping maybe there is a locksmith or alarm guy on the forum I apologize this may get long winded

so i bought my 07 H2 a few weeks ago love it, There is an aftermarket push button start/alarm installed
that works great, but only came with 1 taped up remote key fob. Im expecting to get stuck one day.

There is no brand on or in key fob, I havent easily found the alarm brain under the dash but im sure I will.
With the install of the push button start; the key no longer works only the push button. I went to a reputable
locksmith and he couldnt help. he was able to clone a remote that unlocked doors but would not start vehicle.
The 2 car stereo places ive stopped at want no part of it lol I was hoping the locksmith could re-enable the use of the key
and if remote died I could at least start truck normally. again everything works great, just nervous about getting stuck,

worst case is find the brain and get brand or reinstall a new system with new fobs, Ive seen ones on ebay that look identical.
the guy i bought truck from was not the guy who installed it and he bought it from a used car lot that is no longer around

thanks