Grading results in warning modern coins inside

Thanks to my daughter for the grading gift the coins where from a few trades I did but the one MS type 2 eagle I bought off of eBay from Pinehurst coin exchange I never intended to grade it but when I got it in the mail it looked perfect very happy except that one 69
https://www.pcgs.com/setregistry/quarters/washington-quarters-major-sets/washington-quarters-date-set-circulation-strikes-1932-present/publishedset/209923
https://www.pcgs.com/setregistry/quarters/washington-quarters-major-sets/washington-quarters-date-set-circulation-strikes-1932-present/album/209923
4
Comments
What is the warning about?
BST transactions: dbldie55, jayPem, 78saen, UltraHighRelief, nibanny, liefgold, FallGuy, lkeigwin, mbogoman, Sandman70gt, keets, joeykoins, ianrussell (@GC), EagleEye, ThePennyLady, GRANDAM, Ilikecolor, Gluggo, okiedude, Voyageur, LJenkins11, fastfreddie, ms70, pursuitofliberty, ZoidMeister,...
Warning not to have clicked on this thread.
Non CAC coins inside.
Did you do the quarterly special? with every 5 coins sent in you will receive one free grade.
Hoard the keys.
Lack of punctuation?
Z
Busy chasing Carr's . . . . . woof!
Successful BST transactions with: Bullsitter, Downtown1974, P0CKETCHANGE, Twobitcollector, AKbeez, DCW, Illini420, ProofCollection, DCarr, Cazkaboom, RichieURich, LukeMarshall, carew4me, BustDMs, coinsarefun, PreTurb, felinfoal, jwitten, GoldenEgg, pruebas, lazybones, COCollector, CuKevin, MWallace, USMC_6115, NamVet69, zippcity, . . . . who'd I forget?