I have tangem card and I did use seed phrase option, I imported my ledger seed into tangem, thinking it's safe, thankfully didn't message their support so I assume I must be safe? I mean my funds are still there.
If you didn't communicate with their support during one week after your imported you SEED your stash should be safe providing Ledger SEED was not liked in a different way .
You may check this via Tangem mobile app. P.S. I wouldn't use old SEEDs generated by Ledger to initiate any new wallet.