but already 2 years later, it was tight for the flea market in riem: the old airport site had more and more to the construction site "new munich trade fair centre" soft and thus the future of the flea market in riem was uncertain.

This is all lower case. Can you fix that?
But already 2 Years later, it was tight for the flea market in riem: The old airport site had more and more to the construction site "New Munich trade fair centre" soft and thus the future of the flea market in riem was uncertain.