Extra token accounts are being created

[showered]

Hello,

We have a fairly serious issue where on occasion our users open the app and their balance displays as 0. On closer inspection, it's because a new Kin SPL token account has been created on their Solana wallet. This obviously then leads to mistrust of our app, because it looks like we've lost all their Kin! Some of our users have tens of millions of Kin stored there.

Firstly - what is causing this? Is it because once in a while Agora and the Solana cluster does a lookup, finds no token account for some reason, and then creates one? Is a migration being triggered, even though they have already migrated?

Edit: My preliminary findings are that 100% of users affected by this issue were migrated from Kin3. All "new accounts" created on Kin4 have been unaffected (but my query will take a while to run).

Secondly - what can we do to resolve this while you look in to it?

If you'd like to see an example, I could probably give you at least 100 accounts where this has happened. But for now, here are four:

https://explorer.solana.com/address/Fc5ixhwo5kzCtEdb5zqtkFJ1sz1bxxApYZPPZ1JvaRPh/tokens?display=detail
https://explorer.solana.com/address/BNgnoZs1gtrmhZ8maZv9dFRNW3TP3QsuG8ebfrH3DbR/tokens?display=detail
https://explorer.solana.com/address/Ef8fRckj39V6tczsvCwg24mG3VkQzTjPxm8r477XDMvM/tokens?display=detail
https://explorer.solana.com/address/3kLL1z1XQVmE7g4zLdG6gaeYh8yDVRtw2XPsmw5isvoA/tokens?display=detail

The issue occurs after using both Android and iOS sdks.

Please let me know if you need any more info.

Thanks!