If you are a tipper/donor attempting to send via Credit Card you may run into a $1 transaction being shown on your bank statements.
This is typically used by processors for checking that cards are not being used for fraudulent matters and this will clear up from your statement in a few days.
Streamlabs uses Stripe for Credit Card processing and they have some more detail on this $1 statement here.
If you have any other questions or concerns feel free to tweet us or send in a ticket.