With 1803 OS Build of windows 10 and office version below
Here, after I install my add-in using the msi provided by vendor, it is showing in the excel toolbar.
But when I install on 1909 OS Build of windows 10 and office version below.
When I install the same add-in, it is not showing in the excel toolbar above.
Even though, it is showing in the options.
This is the same issue with every office addin, not only to this product.