They practice under the tenets of the 12 Imams. I could be wrong but is this a sect of Shi’a Islam?
If it has something to do with 12 imams then it's shi'ism. I advice you not follow any specific sects teachings (no matter waht kind if islam people claim it is) but just stick the Quran and the prophet sayings. The rest is just hogwash and misguidings. Fasting Ramadhan is an obligation to all muslims capable of handling it not just Laylat Al-Qadr.
 
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