Mine shows as nothing available if I try to place an order ......Mine is also showing red, but I think that was always the case with GBP as far as I can remember?
I tried placing an order using my GBP balance and that works fine.
I didn't try withdrawal because I don't have a bank setup there yet.
So, I see nothing wrong.
If it says "Available balance: 0 GBP" and you have no open orders, while the balance in Assets shows 49.7 GBP, then I have no idea what is wrong. Time to contact support I guess...No other orders placed/in progress. "Buy" is selected but still my GBP balance doesn't come up as available .....