custom data fields and custom watch face influence

Yesterday I install custom data field from IQ Store and suddenly my watch face started to crush
- activity
-add custom data field field
-start activity
-back to watch face
-crush watch face
without custom data field everything is ok.
I don't know yet what kind of error is but I'd like ask: is any connection between custom watch face and custom data fields, common memory/background, something what influence each other?