It's very common in some marketplaces or in other situations of your interest to request these documents only for security purposes =)
So, for the first one "Proof of Business Association", you can try to use the EIN Letter.
And for the second, "Proof of Address", unfortunately, it's not possible to have an Utility Bill in the name of your company since it doesn't have a phone line, electricity, gas, or water account in its name in the United States.
However, some of our clients hire a phone line/service for their operations, which, in some cases, can be used as proof of address. Perhaps this could be an alternative. In this content, we share some phone service providers: https://globalfy.com/blog/endereco-virtual-e-telefone-nos-eua-como-escolher/
You can also try to use the Virtual Address agreement, which is sometimes accepted by some companies. You can request this document from our support team by clicking on this link: https://help.globalfy.com/help-center/kb-tickets/new
If you still have any questions or need further assistance regarding this topic, we are available to help you! Simply click here to submit your support request and our team will be glad to assist you.