Just use Krux with Sparrow once... You can test drive with Krux app, without spending a single sat.
https://github.com/odudex/krux_binaries/tree/main/Android
It's simple and objective, big QR codes and touchscreen.
Later, for a few sats you can buy an Amigo(ready to use), just flash the firmware and have the same touch UX, on a dedicated device without OS and wifi/BLE.
I've been where you are. The problem is old versions of Blue wallet would always create legacy wallet if a xpub were imported even if derivation were 84. If I were you I would put your coldcard aside and use your mnemonic, load it in a hot electrum with this "weird" setup: legacy with 84 derivation. Your funds will be there ready to be transferred.
Nice you made it! Now the sats are free move them to a new cold storage! And always remember to verify receive addresses on your HWW before! Also good idea to test move some of the sats out of it, and restore it from mnemonic before move use it for larger amounts.
Notes by 1d485daf | export