I just began using Zoho, very intriguing services!

My goal is to embed a spreadsheet, or publish named ranges, in a webpage and I'm uncertain about a few issues.

• I have hyperlinks in my Excel spreadsheet. When I upload the file to Zoho, they are deleted even though the cell still indicates there is a hyperlink (the text/numbers in the cell are still underlined). I have verified by clicking the cell from Zoho and from the embedded/published web page that the hyperlink is missing.
• I installed Zoho Docs Sync in an attempt to remedy this. It appears the files on Zoho are not really on my local PC but a link which when I click it, the file is editable via a web browser. That is great, I'll learn more about that later :)
• ... I then moved my Excel file into the Zoho shared folder. Eventually I saw my file with extension .xlsx in my Zoho account and I viewed it from Zoho.  AGAIN the hyperlinks are missing even though the text/numbers in the cell are underlined as though there is a hyperlink.
• ... At this point in both the Zoho converted file and my xlsx file in Zoho I manually added the link to the first cell. I see the link works for the embedded/published data on my web page ... but the synced xlsx file is not only missing this hyperlink - ALL the hyperlinks are now missing from my xlsx file on my local PC.
• I read this thread about MS Office integration https://help.zoho.com/portal/en/community/topic/microsoft-office-integration but the proposed solution to use an Excel plugin using this link http://writer.zoho.com/public/help/zohoplugin/fullpage results in me seeing a blank page.  Also, I am unable to find anything ANYWHERE for downloading a plugin.  I read about it, but nothing enables me to actually download it.
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MY QUESTIONS

• Where and how do I get the plugin?
• What do I do to avoid re-entering all the hyperlinks?
• What is the best method to update the file on the Zoho site without needing to manually update code for the website for the "new" file?