Found the transparency issue to be true – if I flatten my pdf’s before adding to the ML, they no longer show as black. You can flatten online here – I tested and it does work – https://www.sejda.com/flatten-pdf (tried another flattening site online, did not work, so YMMV) or in Adobe Acrobat Pro, go to Tools > Print Production > Flattener Preview and flatten all pages in document (I used all other presets, didn’t change anything) and it came out flattened, no black in the ML.
Found out the spinning circle stops and I get the confirmation message for the form when I deactivate Yoast plugin – still getting the target container notice if anyone has insight on that.
