Is insta-train safe with your info?

I typed my username and password into insta train to gain some followers. I used it once and now I don't want to anymore. I logged out but now I feel uncomfortable because I feel like my info is out there. I'm terrified of getting hacked. Is insta train safe? Btw how would someone hack you anyway?... show more I typed my username and password into insta train to gain some followers. I used it once and now I don't want to anymore.
I logged out but now I feel uncomfortable because I feel like my info is out there. I'm terrified of getting hacked.
Is insta train safe?

Btw how would someone hack you anyway? Guess your password or...?
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