Hello Fae and many thanks for your reply.
You are right I posted the wrong screenshot.
Yes, indeed I do get the same as you vy connecting the two table through ProductID do but if you notice it says RELATIONSHIP TYPE INDETERMINATE.
That should not happen, the two table should have a one to many relationship determined because, as per your link:
An indeterminate relationship occurs when neither of the fields in a relationship is unique.
In fact ProductID in Products is UNIQUE, so why does it display indeterminate?!