"The clients account is temporarily on hold" when I tried to accept an offer.

[#1]

"The clients account is temporarily on hold" when I tried to accept an offer. The client asked me to look into it from upwork but I don't believe it's a problem on my end. This is my first time using upwork. 

Does anyone know how to find out what the issue is? Where is customer support? 

[#2]

Hi Cassidy,

I've escalated your concern to our team. One of our team members will reach out and assist you further regarding your concern with the offer you received.