You can also contact microsoft store support here.
https://support.microsoft.com/en-us/help/28808/microsoft-store-contact-support
--please don't forget to Accept as answer if the reply is helpful--
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I tried to buy the microsoft office but it seems like the month and year for the payment page is not working. I just can't select a month or a year. Please help.
You can also contact microsoft store support here.
https://support.microsoft.com/en-us/help/28808/microsoft-store-contact-support
--please don't forget to Accept as answer if the reply is helpful--
As we are mainly responsible for general issues of Office desktop applications, but your question is about payment, and it is not supported on Q&A currently.
To help you better, I would like to suggest you chat with Microsoft for assistance.
In addition, I would change your issue tag to be not-supported. Thanks for your understanding.
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