My understanding is that 100% of the distributions in 2021 are classified as Return of Capital, which means, you have to update your adjusted cost basis. But yes, there is nothing to report on your income taxes.
I received, I assume, the same statement as you did. It later says "Return of paid-in capital out of par value is not reportable on the Form T-5 and therefore you will not be receiving a form for the 2021 calendar year. " It's interesting. Return of Capital can be reported on a T5. I have to assume what's meant is that it's not required to be reported.
Also weird is that they referred to it as a T-5 and not T5.
...Stu