Hello, I will be transiting through Frankfurt for my roundtrip flight and one of my flight use Z gates, other flight is from B gates. My flights are from non-Schengen to non-Schengen countries.
I will be flying Lufthansa economy and have Amex Platinum.

Amex website shows that I can only enter business lounges not the senator lounges. It looks like only senator lounge is open in terminal Z. Since the business lounge is not open can I enter that lounge or are there other options?

For Terminal B, I read previous comments that there are two lounges, but Lufthansa website shows only one lounge open. Does anyone know the current status?