Max number of Alexa devices in family plan in Everywhere group?

[Angel_Shan]

Spotify is sporadically stopping when playing on Alexa Everywhere group with seven (7) dots. Works fine on one or two dots simultaneously. All dot software is up to date and have been restarted. This is has been ongoing since Spotify enabled the functionality. Is there a max number of simultaneous devices allowed in a family plan and in the Everywhere group?