Did you upgrade the app permissions to enable the new file picker API?
![Screen-Shot-2021-07-05-at-8-33-58-AM.png](https://d33v4339jhl8k0.cloudfront.net/inline/115081/cc066484f3a6062054928e99f83e64e52b59fcc5/5ff7959a35e8a455d5da55aa8b22ba2b8289009f/Screen-Shot-2021-07-05-at-8-33-58-AM.png)
If permissions have not been granted, the message should appear next to any image field as shown in the screenshot. As an alternative, you can click more actions > Authorize File Permissions.
![Screen-Shot-2021-07-05-at-10-02-25-AM.png](https://d33v4339jhl8k0.cloudfront.net/inline/115081/19e92be5340f6122529d0396c827a8881c69ff89/408b35b0e32b9631fd389c553eb99c1b2819c660/Screen-Shot-2021-07-05-at-10-02-25-AM.png)