Some more details for this.There are 2 steps in the airdrop:
- redeem
- claim
Redeem will “accept” the airdrop and create the vesting for the specific Safe account (this step will not transfer any tokens).
Claim will allow you to transfer vested tokens from the vesting created in the redeem step to an account of your choice (we always use the Safe itself)
The claiming app performs the redeem step on your first claim, therefore it is necessary to perform a claim in the claiming app.
Some more technical details can be found on the contract docs.
It might be worth to create a help center article for this that can be linked.