Hi, I have the same issue as another user had:
Issue:
When you import your Ledger hardware wallet address in your polkadot.js-wallet its a static Polkadot relay chain address which can`t be changed.
If you send substrate-based assets, e.g. Litentry, onto that address they become stuck since there is no Ledger app available in order to sign transactions (sending, staking and so on).
Example:
I`ve sent LIT (from ETH) over the bi-directional ETH <--> Litentry bridge to my imported Ledger address (which is a Polkadot address)
After logging in on Cumulon trying to stake my LIT the address changes to a specific Litentry-chain-address.
Trying to stake will prombt a pop-up saying that there is no app for Ledger for that specific chain in order to sign transactions, hence: my assets are stuck.
Thank you very much for anyone to have an interest to look into that issue / idea.
For a second-grade student: