Re: "You cannot claim this city because you do not own some of the content used to create it"
It's April 2021 and although Origin let me buy SimCity in Oktober 2020 again (lost my original E-mail account so I couldn't access the 2014 Purchased complete version) I find out they still haven't fixed this problem. Why still sell it through the official channels but not take care of the program's bugs fixes is part of the whole chain of commerce. I no nothing of programming, but even if EA / Origin can't fix it directly their is always a work- around like someone in this topic suggested "have a reset button that will reset left City's to not yet claimed city's. Which would have already been a nice feature, even if their was nog bug with re-claiming abandonen city's' for it would clear the grey city's in the region that people had abandoned.
I have more respect is they sell a product that is good.