Have you got in touch with the exchange that stores your ERC20 AE tokens?
After September 2, 2019 all ERC20 AE tokens will become non-transferable due to smart contract expiry. Receiving AE after that date will become harder.
To avoid technical complications and delays, it is highly recommended that users and exchanges migrate any AE tokens before migration Phase 3 ends on September 2, 2019.
If your exchange starts supporting Mainnet AE tokens, they will be able to do the token migration for you.
We have prepared an non-exhaustive list of exchanges including their contacts, so it is easier for you to send them a message. Access the list.
If they reply, let us know!