To revisit the topic of active vs inactive bands, or older bands not working on doors or other tap points..
As long as a band is active and assigned to you, it should continue to work to tap based on your resort stay or active ticket. I. E. You must be currently staying onsite, and have the reservation linked to your
MDE account to tap to pay, open resort door, etc. And You must have a valid ticket linked to your MDE to tap for park entry, etc.
One
RUMOR I've read is that when you have a larger number of active bands/cards in your MDE account, it can cause problems or delays with bands working/registering when tapped.
While I've seen people reply this isn't true (including purported Disney employees), I can say that I have 45+ bands and cards linked to me, our son as over 35, and we have had experiences with bands randomly not working for tapping, even new ones. But after I went into my MDE account and deactivated all but about 10 or less of our bands and cards (each), we haven't had that happen.
Now, as we continue to collect new bands, prior to every trip we activate only the bands or card we'll use that visit and deactivate the rest, and we have not experienced any issues Tapping since, even with our older bands.
I'm not saying it proves the rumor true, just that it seems to have helped us, and others. Nor do I know if there is a "magic number" where this might start happening, or to stay below.
As explained earlier in the thread, to see your bands and cards, and activate/deactivate them...
In the MDE app on your mobile device, go 3 Bar (aka "hamburger") meny button -> My Profile -> MagicBands and Cards -> Your MagicBands and Cards. It will show a list, indicating if it's a band or card, with the code on the back, showing if each is active or inactive. Tap the one you want, and you'll have a button to activate or deactivate it.
Doing this from the Web is better because it shows a picture of each band next to the listings, so you know what color it is (if solid) or what it looks like (if graphic band), as well as the code on the back.
From the Web... go to the Disney World web site, use the menu for My Disney Experience and select MagicBands and Cards. Or visit
https://disneyworld.disney.go.com/plan/bands-cards/
Click to expand the twisty (little arrow or Chevron) next to you or the other person on your account. You'll see a list, with a picture of each and the code on the back, usually in chronological order from newest to oldest,. Bands at top, cards at bottom. The bands and cards will be marked Active or Inactive, with a Deactivate or Activate button.