Error Id: UDQWOQHC

Verifying challenge 4 of Process Automation Superbadge and received an unexpected error.
I'm using a new Playground, which has only been used for this superbadge, and has only had additional configuration to pass the previous 3 challenges.

Error message say that if you are using a new DE and seeing this error to post in teh developer forums.

Hello Trail Blazers, my name is Daniel. I'm a single licence professional edition user with a premier service add on and I am so shy to open a ticket for this question, I prefer to ask my question on this forum.

Here is my issue: I opened a new Trail Blazer Badge a while ago ( Volunteers Management  ) found at:
https://trailhead.salesforce.com/modules/nonprofit_volunteer_management/units/nonprofit_volunteer_management_find

and I want to cancel that Trail course.

I looked pretty much every where to find the "unsubscribe to this course" button and I can't find it.

I hope you can help me and that you understand my question since English is not my first language.

Regards,
Daniel.
http://telepartout.com/SF

There was an unhandled exception. Please reference ID: KLNTXAZY. Error: Faraday::ClientError. Message: MALFORMED_QUERY: When retrieving results with Metadata or FullName fields, the query qualificatio​ns must specify no more than one row for retrieval. Result size: 2

I have a flow that allows you to choose the product type, then the product, which creates the product, then asks if you want to add more products and goes back to the start. Seems to work perfectly. Not sure what this error is.

Hello,

I am working on the Process Automation Specialist Superbadge and have completed the first part of the challenge (Automate Leads). I have created the Validation Rule, Lead Queues, and Lead Assignment Rules, yet I keep receiveing various reference Error ID's without explanation. I am using a fresh chellenge Org as well.

Thanks!

Dave 

Do you have to complete each hands-on Challenge before the next?  I know that its not ideal, but I need to know how I can proceed when I run into issues with the "Hands-on Challenges".

While I am using  a new Playground for Trailhead, I am getting below error while checking the challenge 1 on Process Automation Super Badge 

Challenge Not yet complete... here's what's wrong: 
There was an unexpected error while verifying this challenge. Usually this is due to some pre-existing configuration or code in the challenge Org. We recommend using a new Developer Edition (DE) to check this challenge. If you're using a new DE and seeing this error, please post to the developer forums and reference error id: JQKMJYZS

Can someone could help me ? 

Best regards

The Salesforce1 Collaboration on the Go challenge doesn't work if you use https instead of http in the link you post Chatter, despite what the instructions say. Re-posting it with an http link solves the issue.