The SEC has announced that technical issues with Form 13H (and its variants) resulting from the end of life of Adobe Flash software has been resolved. Filers who were unable to file Form 13H (or variant) because of the issue should submit their filings as soon as possible.
For inquiries or further information, contact SEC Filer Support Monday through Friday (excluding federal holidays), 9:00 a.m. to 5:30 p.m. ET, (202) 551-8900, option 3.
Sources:
Resolved: Form 13H Issues Caused by Adobe Flash Player End of Life (sec.gov)