No longer to open a file in Excel

Hello Nancy and sorry for my delayed response. Jammed.

To your note above, what was the security issue? You have an option above (looks like two links in a chain) to insert a hyperlink. It would save us a lot of time if you could see what I'm seeing on screen. If necessary I can take a string of pictures. Please advise.

And yes- no problem when I open the file from my Mac device saved on my local Dropbox folder.  Note that the file is also stored online with Dropbox as is the case with most all my files. Unfortunately, just noted that I am now also having this same problem with my Word files. As documented in the picture attached, when I click on a link I've embedded in a Word document that resides on my Mac and is also stored online with Dropbox (see highlighted text in picture # 1 attached <used our correspondance as an example>) it  bringings me to picture #2 attached which no longer gives me the option that I've used for over a year to open to Word (and Excel) on my MAC vs "Word for the Web". 

I browsed the steps mentioned in your link and doesn't look like the suggestions made would apply to my problem.

I changed my default browser from Google to Safari. Per picture #3-  slightly different presentation but still no option to open on my Mac vs on the web.

So what do you suggest? As currently functions I click on the link, choose the open in web which is the only option I have. Then I have to copy the file name and paste it into Finder to open up the file on my Mac. Ugh.

One final thought on my end- I received an eMail on May 26 from Dropbox stating- You've connected a new app to Dropbox.  Goes on to say that the app is Microsoft Office Online.  I recall doing that when I was trying to resolve this problem. Any chance that's the source of the problem. If so, how do I disconnect?

Thanks!