My API Key doesn't start with a letter

My API Key in the free plan starts with a zero (0) but my design platform is requiring it to start with a letter, similar to the Nomics demo API Key. I’ve reached out to them to confirm this issue but also wanted to post on the forum. I am using for a web based app.

If your platform can’t handle starting with a zero I recommend just getting another key, if you can’t fix your platform.