Just fyi a different person can sign for certified mail and they can claim they never received it. I've had this happen with clients. This is why I don't do any physical payments anymore, electronic payment only.

I'm not diagnosed but highly likely ADHD. I have to go 5-20 pages usually before I can focus on just the book, read quickly, and absorb information. Sometimes I have to reread the same paragraph or page many times, that usually means try again later.