Up until the point I foolishly updated the MM app my iPhone ran the old marine charts of the areas I was interested in - namely Scotland. I have paid for these charts several years ago (BSB4 format) and have no intention of buying them again! I don't want the whole of the UK and Eire charts I want the original functionality. There is no way I can register them. Sort this out or I will never ever buy any of your products again and will advise every other sailing and hillwalking colleague to avoid your companies products.
I am ripping!

If you were using the BSB charts, then you had to have the import maps feature to load into the software. The feature should also be available for activation on the mobile device (iPhone) as the license typically had two activations for PC and two for mobile.