Immigration health surcharge option to edit details?

[thinkingahead]

hi all
I am applying on behalf of my wife post our marriage. I am already on ILR and wife is based in India currently.
Whilst trying to pay the Immigration Heath Surcharge, on the site I accidently selected for my wife to join me in the UK instead of her "applying alone". As a result instead of £600 pounds that i was expecting to pay for 33 months, I am being prompted to pay £1900.

I need to change her to application to "applying alone" on the website but it is not letting me.
Any one knows how to edit the options before paying the IHS?

Would it mean I need to make a new application?

pls advise asap. thanks

[CR001]

I don't think you can edit it. You will probably need to register again with another username/email and start again.

[thinkingahead]

Thanks CR001