£1177 UC appearing in my account after migration

I was only expecting about £600 to cover the last esa missed payment and to cover the dates until the next uc payment.
There absolutely no break down of this money and it's just appeared. There's no break down of when I'll get paid or how much.
Does anyone know why it's so much? Is it now being paid monthly or does this include rent?

It could be 2 weeks UC.

There's a section on the UC portal under the home tab and then under the payment advances tab where you can see statements.
It looks like the total paid was for rent, and also a monthly payment, and payments are now monthly and not fortnightly.
It looks like there's been an overall decrease in UC from ESA, but I need to do the maths after the next payment and the next statement.

I think I'm replying to the wrong thread. Someone somewhere asked me to let them know how it went