It is not necessary to sign up an ezTalks account to join a meeting. If you know the meeting ID, you can directly go to the eztalks official website and join a meeting without signing up an ezTalks account or downloading the software.
If you are invited via an email or a link, you can simply click on the link to join a web meeting on a computer:
Note: if you need to watch a sharing screen or video talk during the meeting, it is required to join an Interactive Meeting by downloading the app at the first time.
Please read the article of how to join a meeting without downloading the software for detailed instruction.