I used to be able to choose between posting as myself or as Oxjam Beeston Music Festival (volunteer organised music festival raising money for charity) for which I am an admin when posting to a public page of another organisation ie pages where you don’t have to join the group or whatever. In the posting box there would be a drop down arrow where I could choose between the two profiles. This seems to have disappeared. Any help gratefully received! Thanks
Try to contact facebook support. Has this dropdown disappeared everywhere or just in some posts? Could be that you can't comment on some posts as a page.