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I need your advice .........................
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A question regarding what you see for Office 2016 - does it show <Office 2016 Professional> or <Office 2016 Professional Plus>? It may sound like a slight difference in the description but will make a big difference in what you need to do to completely clean up this system in order not to have any issues when you finally install Microsoft 365
Without knowing the answer to that question, what I would do if this were my system is start with uninstalling Office completely from this system using the Microsoft Uninstall Tool to get rid of all remnants of Office (you can safely ignore the info related to the <Microsoft Store>
Uninstall Office from a PC
https://support.microsoft.com/en-us/office/unin...
*** if you had <Office '2016 Pro Plus> on this system, will have to give you some additional instructions but not worth confusing things now if that isn't the case
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What I'm thinking is to cancel the trial for Microsoft 365 then uninstall everything I can find on my computer having to do with Office in any way whatsoever. Then just go ahead and purchase the $69 personal Microsoft 365. I don't know what to do about the button without the uninstall in the Start menu above – – any advice?
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Sounds like a great plan. No need to cancel your trial if you purchase MS 365 before the 30 days are up and if you don't purchase it within the 30 trial period (actually within the first 27 days to avoid being charged for a '365 <Family> subscription) all you need to do is make sure to turn off <Recurring Billing> for the trial
Turn recurring billing on or off for Microsoft 365 for home
https://support.microsoft.com/en-us/office/turn...
If everything has been removed from your computer, it should also take care of the icons in the <Start> menu. If not, let me know and we will take it from there otherwise complete the purchase for '365 Personal whenever you're ready from
Microsoft 365 subscription options
https://products.office.com/en-us/compare-all-m...
Last word of advice, take it slow and come back and ask any questions if you're not sure about something along the way following the adage "measure twice - cut once"