I need help with Microsoft 365

Hello
I am a mathematician with low vision. Microsoft Word is extremely helpful
for drafting mathematics.  It is  better than LaTex or MathML because the
user interface for those language editors are universally hostile to people
with low vision.
However, I have found a serious bug regarding Read Aloud and the Equation
Editor. Namely it switches languages right in the middle of a document.
There are no indicators that a language change is wanted or needed. It just
changes from English to French, Spanish or German somewhat randomly. This
makes proofreading very  difficult. It is a problem for 365, but not the
desktop version.
I can find nobody at Microsoft to take this bug report. I even  have it
narrowed down to about a 5 line file. Can a Rep for Microsoft who serves on
WAI help me. Word is the best interface I have every used for writing
mathematics with low vision.
I am not unfamiliar with Mathematics or accessibility. This is a missed
opportunity for MS.
Best regards, Wayne Dick