I was just about to ask a very similar question

so i hope you don't mind me jumping in your thread.
I live in the uk and before the big update and district changes i moved my primary account to the american region because there was a ton more people to
group with but my connection is flaky some days (more recently) and ping is still high as if i was playing on distant servers no matter which district's i choose.
Would my account still be locked to the american servers? and if so do you think they would change it back to the europe region?
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I do have access to some other accounts that were locked to both euro and american regions at the time and there is a difference in connection and ping, Euro does give me a better connection & ping...