For the 'Medical Aid Recording', you must revive 10 NPCs/players in the defeated state for it to count. After coming across a solution thread from a year ago: https://en-forum.guildwars2.com/discussion/32238/medical-aid-recording-bugged-merged
I bought a new recording device on the same character that originally bought 21 (the total necessary number of devices required), then I revived 10 NPCs under the Temple of Kormir Waypoint in Crystal Oasis. After reviving 10+ NPCs, I did not get the recording. I did the same steps after going on another character and purchasing a new recording device, but the Medical Aid Recording is never given to me.