VBA concern: support for macros or controls not installed

Background: installed Zotero, a citation manager, to use on Word but it uses macros 

My Word doesn't seem to have VBA installed. Every time I open the app, error boxes appear. Screenshotted below:

I have tried a few things to fix this but without benefit: 

• Macros enabled in the trust centre
• VBA enabled in the trust centre 
• Rapid and online repair completed 
• I have attempted to 'change' the program in the Control Panel in order to access the 'expand/add features' option but this does not exist as an option for me. When I press 'change' only repair options appear for me. Screenshotted below: 
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My impression is that somehow VBA was not installed when I downloaded Office form my account. I appreciate VBA is downloaded automatically but this has not been the case for me. 

Please advise on next steps. 

Thanks in advance.