Got an email re: my son's IHS (as others have experienced, the website did not allow us to pay surcharges for minors.)
It states:
Unfortunately there is a bug with the IHS Portal where children appear to be exempt from the IHS payment. This is not correct. We are working to resolve this issue.
The application has been amended for the IHS payment request. The Visa type will appear as ‘Settlement - Parent, Grandparent or Other Dependant Relative’, this is the only way we can continue the process until the bug is fixed.
Please note that if the full payment is not made by 2nd August 2017 then your application will be refused. If this is the only reason for refusing your application, you will have to make a new visa application and your visa fees will not be refunded.
To prevent any further delays with processing your application, once you have made this payment please send an e-mail to ihs.sheffield@fco.gsi.gov.uk containing your name, GWF reference, IHS reference and the amount that you have paid for IHS.
I'm not sure if this was why our application has taken so long, but I'm happy we were finally able to pay it and get that application going (not to mention, having confirmation that they are actually moving along in our application process!)
Also, they made mention to pay by 2 Aug -- we were calculating our 60th BD as being 3 August. Not too shabby.