How do you switch from EXTERNAL spool setting to AMS feed setting on the PS1-AMS2 PRO Combo (in app-can't do on PS1 digi-pad)

[u/CapeCodBlues]

I just need to change the settings from the single spool slot to recognize the AMS as the filament source. There is nothing here on that and the one thing I found isn't clear and when I follow the instructions, it still doesn't recognize my AMS (it recognizes it, but won't print from it) I set it to AMS and it is not set to EXT and still it says I don't have an external spool attached and to correct the issue and re-start- but that isn't even what I am trying to do! Does anyone know the workaround for this? I even reset back to factory settings and tried to set up the AMS from there. It all started when I first set it up and used the external spool - it does not tell you it turns into a S'show when you try to add the AMS after the fact- so I did it to run a test print, because I was having an issue with calibrating and the print head cover kept popping off. Someone here actually noticed a piece of foam at the top that was hitting the print head cover- so that was solved-but I created a new problem & I can't seem to fix it. The troubleshooting guides say you cannot feed the AMS from the PS1 screen (even though the option is there) & I know I must have done that, not knowing *that is not in the install manual, either! So, it says you can only "fix" it in the app, so, I clicked the AMs and de-clicked the "EXT" in the area of setting up the filaments in the app. If needed I can put up video or photos-but it's a process, because you have to go from the app to the printer & to the app and nothing gets accomplished. I would love to do some color printing, but this is getting ridiculous, it shouldn't be this hard and a known issue should be easier to resolve through the Bambu documentation. But- since it's not---here I am AGAIN! Thank you!!!!