Hi Colleen,
Your effort and time on this issue are highly appreciated.
Microsoft always takes feedbacks seriously. Currently we have already received several similar issues from other customers, after further investigation, we found a Service Upgrade about mobile website access is going on recently. Here is a related thread stating detailed information for your reference.
community.office365.com/.../74512.aspx
In addition, we welcome you to keep your eye on the forum for any updates on the features that concern you.
Best Regards,
Maggie Li