Coinbase is no longer allowing me to do ACH transfers. I asked why and they told me they cannot discuss this further with me. Very strange. Anyone having similar issues?

Coinbase originally told me that my bank is restricting me, but I called my bank and my bank told me that there are no restrictions in place on their/the bank's end. I contacted Coinbase again, telling them that I contacted my bank and that my bank confirmed that there are no restrictions on their/the bank's end. Coinbase replied that they apologize, but there is nothing they can do on their end. I can no longer do ACH transfers, and they cannot give me an explanation for their decision as to why. Did anyone else experience this issue? I'm very curious why they are having this issue and are unable to provide me an explanation. The fact that they are not being transparent is concerning to me.