Paste the URL of the video that was tweeted and you want to download into the text box above and then click on the Download button. This will present you with a list on options where you can select which video quality format you would like to download. Select the video quality preferred by tapping on the Download button and then selecting the Download link from the options.
After you click on the Download button corresponding to your preferred video quality the pop up dialog box on your machine will ask you for your desired path where you would like to save it and you can save accordingly.
There might be a list of probable reasons behind this issue:
if you have the tweet video / GIF link you can download
No it's Totally Free and has no limit to download .
Yes. TwitterDownloader is very safe, no virus, no malware