@prebrook,
Apologies for the late reply – we have a very large volume of tickets/support requests we’re working through right now and appreciate your patience.
At this time, the linking limit (how many different devices/wallets can be linked to the same Uphold account) is 4. So the 5th device would not be able to deposit earned Rewards to your Uphold account.
As for why all of your other devices didn’t deposit into Uphold correctly, it’s very likely that you’re encountering this known issue that the team is addressing presently: