Creating a new application to get Access Token: Won't Accept Callback URL


Went to create new application. Followed 5 different sets of directions posted on discussions here and previous threads. Every time I submit it reads “not a valid url format” referring to my callback url. I’ve left it blank. I’ve used by website. I’ve used a few other recommendations from former discussions. Every time rejected. What’s the deal? All I want is my access token! Please help!


how does this work?