Why do I need to provide documents that I already gave to IBKR?

It is necessary for us to have current information on our clients. Expired or out-of-date documents cannot be accepted. Please make sure all documentation you submit is legible, has not expired and all proof of address documentation is less than 12 months old. It is important that you promptly respond to our requests for documentation so that the correct withholding rate is applied to your account.

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I responded to your email and provided the requested documents. Now I received an email saying my response was insufficient to resolve the issue. Why?
I submitted a proof of address and I received an email that the document submission did not resolve the issue. Why?
Will I have voting rights for fractional shares in my account?