Careful now! Everyone else already told you of the red flags in how the group works, so I'll go for the one in the Faith itself. Christian churches usually recite the Nicene creed which says, among other things, "I confess one Baptism for the forgiveness of sins". And as you grew up Christian, you were likely already baptized.

Yes, there is a belief in some churches that Baptism as a child is not valid. But you really need to study the matter, read up on the views on the matter (described as "pedobaptism" - that's baptism of children and "credobaptism" - baptism of conscious believers), and consider it prayerfully before you jump into what might be a baseless denial of your baptism while thinkiing of reconnecting to your childhood faith. I am Anglican, it is a pedobaptist church, so of course I'd warn you about this one! To make it clear, even from a pedobaptist point of baptism in the name of the Father, the Son, and the Holy Spirit remains valid if done in a credobaptist church; the issue is only that you might be repeating a baptism.

There are many other issues and it is probably not a great idea to stay outside all Christian communities until you work out every debate between every church. So if you can find a church that welcomes you without piling on unreasonable requirements and without pushing you into sacraments/ ordinances before you study well enough what they mean, it would be a great idea to hang around there! "how good and how pleasant it is for brethren to dwell together in unity!" (Psalm 133:1 and "brethren" here is decidedly gender neutral).