@Aldoso What problems do you experience? The only thing this PR (together with #494) does is making the lib use the China API URL if setting bootstrapURLKeys.region to 'cn'. If not setting 'cn' there should be no difference to version 0.27.0 (the version prior to these two PRs).

This is explained here in the docs.

However, a bug made version 0.28.0 break if not specifying a region at all. This is no longer a problem in 0.29.0.