How can I download MDK-ARM V5.43 when using UBL

I am using MDK-ARM V5.41. When I click on "Check for Update" in uVision it takes me to the website and I have to fill in a form.  This prompts for PSN or LIC.  However, I do not have these as I have switched to UBL.  The UBL serial number does not work.

I have used this method of upgrading many times before, but not since switching to UBL.

I have noticed that there is an alternative method to downloading MDK-ARM, via my UBL account but this only has V5.42a.

Help please.