Been using trial version of VMU for 11 days now - installed on a desktop and a laptop both running windows 10.
Both have been syncing with google calendars (GC) now problems till today.
Had some events disappear on the laptop, re-added them and made a few changes - did not see them on the desktop. Added a few test events on the desktop and they don't appear on the laptop.
Logged into GC and found none of the test events from the desktop OR the changes from the laptop had arrived.
On the desktop, stopped VMU, deleted the VueMinder.Goggle.Auth folder, restarted VMU - this caused Firefox to startup with a GC asking to allow VMU access which I said allow.
Did the same on the laptop
Now checked the GC web and found an extra Calendar

OK names been changed here as don't want to post actual email address but you'll get the idea

Account for Gmail was for Fred Bloggs, email fred.b@googlemail.com so had a calendar name Fred Bloggs and calendar owner is fred.b@googlemail.com which is what you would expect.
Now the extra calendar I have is named as fred.b@googlemail.com and under the description it has "Created with VueMinder Ultimate. Get it at http://www.vueminder.com.
The laptop and desktop both used fred.b@googlemail.com as the calendar name in VMU from day 1 and used only the calendars on google, the local initial calendars under My Calendars were deleted. I wanted to use only GC to sync
When viewing under GC, and have both calendars selected I get duplicates and some of the test events and changes from the laptop - its a mess.

Stopped VMU on both desktop and laptop, deleted the new fred.b@googlemail.com from GC so left with only one which was the original Fred Bloggs.
Fired up desktop and laptop and synced, a new fred.b@googlemail.com calendar gets created.
Tried importing the original calendar into the new one with the thought of deleting the original (Full Freed Bloggs) but there's no option to delete the original calendar - you can only delete new ones like "fred.b"
Fred Bloggs is the original Calendar (C_Orig)
fred.b is the new calendar (C_New) automatically created by VMU
I could understand the creation of the new calendar because its accessing GC via fred.b, and not Fred Bloggs , this would have been from day 1 but why then does Fred Bloggs have some of the VMU entries.
No idea whats going on, and there does not appear to be any debug log options
I now have 3 calendars, all different for the "same" account/name

Any ideas what to do ?
Leigh