Check these support messages for details.

[#1]

"We've hidden your profile because it does not meet the following Upwork guidelines. You will not be able to submit proposals until these issues are fixed. Check these support messages for more details.

Please edit your profile and then resubmit for review."

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thanks

[#2 · Accepted solution]

Hi Derek, 

I've checked this with the team and they will reach out to you directly to know which changes you need to apply on your profile.