Old Microsoft Office 2010 (Unknown version) license

Hello everybody,

I've been having an annoying activation problem with my old Microsoft Office 2010 license because of a number of reasons. In order to provide relevant details of my case, I've made a list of peculiar characteristics of this device and this Office 2010 license bought long ago and installed in a corporate CPU now under maintenance.

• Original Microsoft Office 2010 (Unknown version) license provided in a DVD case was bought in 2011 or 2012 for corporate purposes, purchase not performed by me.
• The software was originally installed in my corporate CPU, but the case with original intallation DVD was lost over the years after several administrative changes
• Serial product number was carefully kept by me in an anticipation of the possibility this DVD could be lost, which came true over the years.
• CPU is monitored in a corporate environment and has a specific Microsoft Windows 10 license unknown by me, which DOES NOT INCLUDE Microfost Office, though.
• This CPU is an Intel i3 with 16 Gb of RAM memory on a 64-based Windows 10 Home Single Language OS, version 22H2.
• Microsoft no longer provides support for Office versions older than 2013, therefore preventing me from finding a solution in Microsoft documentation and automated Microsoft Internet tutorials/assistants.
• I've risked downloading and installing a non-official Microsoft Office 2010 on this CPU from a third-party website with no relationship to Microsoft because of its absence from Microsoft official sources with good results.
• Activation fails continuously, though, even when I copy and paste the correct serial Microsoft Office 2010 serial number I have in my backups. I have a strong suspicion this has to do with the wrong software version (Home & Student X Pro), but I am not entirely sure of it. Product number error code is 0x8007232B
• My corporate environment does not provide Microsoft Office to all of its computers because of budgetary constraints and the availability of alternative freeware. Moreover, they are located in an institution completely separated from where I work, because the Windows 10 version I currently use is registered with the local regional Government under an institutional corporate e-mail completely apart from this centralized IT facility. This organization is called PRODESP (https://www.prodesp.sp.gov.br), which in turn is understaffed and deals with all kinds of issues, with a particular focus dedicated to financial issues, because of the countless employees the Government of Sao Paulo State (Brazil, South America) possesses accross the entire State.

Recently I tried some alternative Office suites but neither option I tried had an advanced "Find and Replace" tool which only Microsoft Office has, which made me even more strongly attached to my user experience with Microsoft Office 2010 and this is why I would like to continue using it despite this license being now almost 15 years old, and its broad operational compatibility with the current Microsoft Office 365 version, particularly with regards to file formats, recorded MACROs and many other aspects not of interest and neither discussed here. An illustrative screenshot with my problem shown on it is provided below here too.

Any help from whoever is able to help me solve this problem would be greatly appreciated, particularly if provided by a Microsoft representative. 

Thank you.