According to your description, your question is related to Skype, which is a totally different product with Skype for Business.
As we are mainly responsible for general issue of Skype for Business, your question is not in our scope. I would remove the office-skype-business-online-itpro tag.
Skype 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).
For the related questions about Skype, you can ask in here. Hope you get better response.
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