I am up with them for 6K. They have raised my limits by request. Instant withdrawals. Solid book.
I had the opposite experience.
The starting limits before they knew anything about me were tiny, and they progressively got worse.
I requested a limit increase - I DO NOT recommend anyone do this - they examine one's account and lowered my limits rather than increased them.
I finally withdrew and asked them to permanently close the account - this is a nickel and dime book - not as $500 and $1,000, but as $00.05 and $00.10 book - afraid to take a bet.