Hello 'ozziehee',
The problems with your cart have nothing to do with your compu-ability.
It does, however, have a lot to do with ebay's.
Some people still to not seem to have the cart function when they use ebay Canada.
Others, such as myself, have had it for several months. Once it showed up for me, it
never left, not even for a moment.
For many people like yourself, though, it seems to come & go.
I think that is soooo weird.
One would think that a feature on ebay is there on the website available to whoever logs on
from wherever, at whatever time. But no. For some reason, different people get to see and
use different functions.
So until it gets set up permanently, - you can always go to the US or UK sites, as they have the cart
as a standard feature for everyone.
Or, if you are sure you want to buy the items, if you click "Buy", then "Commit", the items appear
in your Purchase History, and all those in the same currency will be added on to one bill at the
checkout when you click "Pay Now" on any one of them.
This does not work with "Immediate payment required" items, alas, - so you will need to go to
the US (or UK) to add a bunch of those to a cart if need be.
Eventually, maybe one day ebay Canada will, at some vague point in the future, get it all sorted out.