Unable to buy Mobile Suite Upgrade for v4 site (using v5 licence)
 

I was recently forced to buy the v5 licence so I could upgrade a site from v3.x to v4.x (because that was the only way I could get a v4 licence).

I have no intention of running v5 given that it is incomplete beta software and I only bought the licence to access v4.

However I also want to buy the Mobile Suite Upgrade for my site which has been upgraded to v4 using a v5 licence, but it's not possible to do that.

When I go to buy the Mobile Suite Upgrade it shows my forum as v5 (even though it is v4) and there is no option to buy the Mobile Suite.

So how do I do this?