ERC 20 to TOMO WALLET does not work

All - I have all my Tomo as ERC 20 in my Ledger Nano. I would like to move this to Tomowallet. While trying to import into tomowallet, it gives 4 options, but two are relevant to me. a. Ledger wallet. b. By private key. When I select a, it did not work.

Should i select private key and import? Please suggest. Appreciate a prompt response. Thanks.