Windows 10: Lost Microsoft office 2016 activation key

I bought lifetime subscription of Microsoft office 2016 home & student from flipkart on oct 2018. Last week i got my desktop OS refreshed (windows 10). Now i want to re install office 2016 but i dont remember my microsoft account details like email id etc. I have invoice from flipkart. tried calling Microsoft support but all associates were busy (called around 5-6 times). Can anyone tell me what to do next? do they have email id?

:)

 

Office 365 or Office 2016


Under info for the new office listing on My Visual Studio it states.

Office Professional Plus 2016 (x86 and x64) - (Multiple Languages)
To obtain the product, follow these steps:

Step 1: Get your product key by clicking the ‘Get key’ button on the right.

Step 2: Go to the Office website by clicking the ‘Get it now’ button.

Step 3: Enter your 25-character product key and continue as directed on the site.

Released: 9/23/2015

And for the discontinued it states.

Office Professional Plus 2016 (Discontinued)
Info
Keys
Office Professional Plus 2016 (x86 and x64) - DVD (English)
No additional details are available for this file.

Released: 9/22/2015
SHA1: 213A8A0F8849516704101CB6C49F6A027B0D6D5F
File name: en_office_professional_plus_2016_x86_x64_dvd_6962141.iso

I'm thinking option one is going to be my only option. I'm fine with that as long as I can get Outlook to work with my ISP's pop3 e-mail. Last time I tried that with the new 2016 install I could not get it to work, no way no how. All the same settings that work with the ISO install?

EDIT: I should mention, for me as far as I know, neither of these options are a subscription. They use two different keys but they are perpetual one time activation licenses. I only ran the new download briefly though, as I could not get outlook to work. I bailed and went back to what works.

 

Microsoft Office 2016 asking for product key

You might have a KMS activated Office 2016 license installed. These normally require connecting to a Windows Server at your work place in order to reactivate. Another option might be signing in with your organization account and activate.

Which edition of Microsoft Office 2016 is it? You can find out by opening a Office 2016 application, click File > Account

As suggested, its probably best you contact your organizations System or Network Administrator; or Desktop Support for assistance.

 

Microsoft changed someething in the Office 2016 setup?


I have product keys for Office 2016 Pro on MSDN, using those keys I can activate office 2016 by just entering the product key. MSDN has been migrated to a new Visual Studio Subscription site. On that new site under product keys I have my old Office 2016 keys listed as "Office Professional Plus 2016 (Discontinued) and new keys listed as "Office Professional Plus 2016". The discontinued keys still work, I'm still using them.
here's the weird part. Just tried to use one the new keys and I get menu's I have never seen before.










Sorry for the quality, camera acting weird on me. They looked fine in the viewer. I'm logged in with a local account on this PC. I only went as far as the last screen shoot. If I don't do the redeem online, office will not activate. It just asks for a product code and starts all over. If I enter one of my original MSDN keys on that first screen, it activates right away without the add this key an account stuff. If I use one of my new keys I'm back in the add this key to an account loop. I'm debating starting all over again after switching to a Microsoft account to see what happens.

Anybody else seen this? I did a quick forum search and didn't find anything?