Unfortunately you cannot terminate a current membership early to start a new one.
Memberships always run their full monthly course before a new membership can be started.
Hope this helps.
Yeah - unfortunaetly it's not possible.
Lots of people ask about this - e.g. because they have used up their monthly membership allowances before the month is up and would like a new membership and allowances "early" rather than buying add-ons.
Or where they are not on Guido and are travelling to the EU within the month and want Guido EU roaming to work.
I always wondered if it would make sense (and make more money for 48) if they allowed this even if the user had to explicitly select it.
But maybe it's simpler for them and/or they make more money from add-ons by sticking to the strict "all memberships always last a full month" rule...?