It is common for a score to drop when a new account is added. This is because new debt is reported. Typically, this will begin to rebound after on-time payments are made and the "risk" that is associated with opening a new account begins to diminish.

Here is a link to our FAQ page that goes into more detail: https://help.selflender.com/en/articles/34-why-did-my-credit-score-decrease-after-getting-the-credit-builder-account