I root it using Towelroot and I do not have safestrap installed as it's still not compatible with the latest fiirmware yet. I did not made any modifications to the builp.prop.
I still can access my settings (strangely) on my kindle but I can't access my SU anymore even if it's there. Please anyone!! HELP!!! I really appreciate it.
I think it's fixed. Hopefully. I re-enabled the OTA updates and reinstall the SU and it worked!! Sorry for the sudden panic attack.