Some broker will have different feeds due to the interbank info that they are getting, it is quite normal as long as deviation is not too large or abnormal
It depends how different we are talking. If the charts are totally unrecognisable then I would look at other brokers and see which chart is closest to reality and then avoid the broker that is completely different.
Really depends on who the brokers are using which interbanks they get their info from .
Once it’s not too big big or unsimilar it’s perfectly fine