Devcop instance?

I have developed an assessment tool that I would like to hook up to d2l for grade passback. The github says "If you are not a member, you can easily join in order to access credentials for the Devcop instance." However, when I follow the link (https://community.brightspace.com/SelfRegistration) and attempt to register, it gives an error

[Brightspace_Community has reached the available portal license limit. Registration from Brightspace Community are not able to create portal users.][We encountered an unknown error while processing this request.]

Is there a devcop instance I can access? While I am affiliated with an institution (University of Arizona) that uses d2l, this is tool is associated with my company and I do not want to use university resources to develop it. However, I will use the product in the classes I teach at the university. Thanks.

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