[levemi]

> I visited the homepage (https://www.teller.io/) and got a warning about the SSL cert being invalid. Kind of ironic. :)

The correct URL is https://teller.io and then you wont get an SSL cert warning. Not everyone uses "www". Nowhere on teller.io do you see a link to www. You put garbage in and got garbage out.

[amgreg]

many if not most people input the www subdomain by rote. unless teller does not care about that category of people, it should probably fix the issue

[mderazon]

Of course they should. Redirect traffic from www.teller.io to teller.io