Yes, check punctuation always.
@Sweetsssj has several impersonators sweetssj sweetsssj. (note the period)

And, since you follow these people's writings, talk to them, see if they sound the same. If they are really hurting for money, a few minutes isn't going to kill them. But usually, it is not them, it is just a scammer.

The people that actually ask for money for votes, set up bots to do it, and they are all published with instructions and a track record.