in addition I would suggest to extend the proposed JQL to make sure you only see issues due within the next seven days from now on.
due <= 7d AND due >= now()
Another perspective could be that "due next week" doesn't mean the next seven days but literally next week. This can be accomplished with these advanced JQL functions natively (no add-on required).
due <= endOfWeek("+1w") AND due >= startOfWeek("+1w")
More about advanced JQL is documented here: Advanced search reference - JQL functions