On rare occasions, it is possible that you experience some onchain data loading issue or slowness.
This problem can have several origins and a few easy troubleshot are listed below:
Check your internet connexion stability
Check your VPN and try turning it off
Check your wallet RPC if you use a custom one
Try with a different wallet (Rabby, MetaMask, etc.) or browser
If despite this actions you you still have difficulties to use the Morpho app, please contact support with the chat box at the bottom right of the page.