Downloading as zip Not Workingquestion

Downloading as zip is not working.

Here is information on my devcies etc.:

1. phone: samsung S6
2. computer: Macbook Pro
3. Using: web.airdroid.com
4. connection: "Local Connection Mode"

Usually nothing appears in the "downloads" bar, but when it does (as you see in the screenshot) nothing happens. It just spins indefinitely. I have tried multiple things to fix this and no luck.

How can I download multiple files? It seems many have issues with this and I echo them all in saying downloading one at a time is not really a reasonable option.

I am following up on this as it's gone over a week without response. I was considering purchasing a paid plan for Airdroid, but if there is no support forum then I'm wary of doing so and will look elsewhere. Please let me know if there is a fix for this. It seems counter-intuitive to have to literally download each individual file.

Thanks