Just got paid

I received an email stating that I got paid about 25% of my balance with Peerstreet. When I logged in, I discovered that 53% of my balance was available for withdrawal. I initiated the withdrawal immediately.

I am not sure what this all means. Why was the paid amount in the email different from the actual withdrawal amount? How much of the remaining 47% should I expect to get back?

Any thoughts would be appreciated?