USCIS announced that, as of June 2021, it will allow attorneys and accredited representatives to use self-service kiosks in USCIS field offices to pay the fees for filing an appeal of a DHS officer decision to the BIA or for filing EOIR immigration court motions.
https://brian-d-lerner-blog.com/tag/eoir/
https://brian-d-lerner-blog.com/tag/bia/