TIGER69 is on the $! My neighbor went there and changed from being alomost OTD to a masmid who knows alot of Tanach, Gemoros, Gr”a minhagim, you name it (more than me amazingly)!
So usually it has to do with kiruv but I wouldn’t rule it out. Try to research the family as much as possible to see if anyone needed help in Yiddishkeit. Hatzlacha.