The trouble I’m having is when I go to target dummies and to try different macros, I’ll enter the new macro, talents, then keybind it to my “TAB” button but when I fire it off it seems to keep using the previous macro that I keybound a few minutes ago, do I have to completely delete the previous keybind and macros totally? Do I have to clear the spell queue? Do I have to totally uninstall GSE and reinstall it after every macro I tried? somewhere along the lines of doing all of this it clears out and finally starts using the newest macro I populated I’m just not sure where the clear finally happens and it accepts the new macro, bare with me I’m 60 and have tried troubleshooting this for weeks so I finally had to reach out for help….
Im 60 too, so not old 
No you don’t have uninstall anything, import, keybind, save, test.
Also make sure you have no conflicting keybinds.
you need to make sure you do a /reload everytime you change sequences/talents.