I installed the free version of one calendar & paid £4.99 for the premium version via pay pal and am told now that I have the above problem, you don't have an account with either of my 2 email addresses. Where has my £4.99p gone? 

I'm using Microsoft Launcher on a Samsung Note 10. The OneCalendar yearly widget only shows the dates but not the colours of the calendars, so there is not much use in it.