Hi @WA ,
Yammer is currently not supported in the Q&A forums, the supported products are listed over here https://learn.microsoft.com/en-us/answers/products (more to be added later on).
You can ask the experts in the dedicated Yammer forum over here:
https://techcommunity.microsoft.com/t5/yammer/ct-p/Yammer
https://answers.microsoft.com/en-us/msoffice/forum/msoffice_yammer
----------
(If the reply was helpful please don't forget to upvote or accept as answer, thank you)
Best regards,
Leon