Reschedule appoinment and ihs outside uk

Hi
Last 2nd of sept my daughter had a visa appointment in vfs manila. But then unfortunately due to lacked of documents she needs to reschedule her qppointment again.
My question are:
How to reschedule appointment in visa4uk online appointmen?
Do i need to pay again the visa fee and ihs?and make a new application?
How to get the refund and how long?ive paid everything here but the application in philippines.
Please please help me!

Have you tried logging in, going to your appointment and updating it? I did this today, 4 days in advance.

I didnt tried it becaus even my solicitor cant do it to reschedule. But we requested already a refund. To make a quicker appointment, we did submit a new application and pay again the visa application. But how long is the refund? And do we need to pay the ihs again? Even though we havent use it.?

Like I said, I just logged into the visa4UK website, went to to the appointment date and manually updated it.