Problem with csv importing - a lot of bugs

I have an export of my collection from TCGPowerTools (v1). I mapped the columns, but the results of the import are poor:

“207 valid items are ready to be added to the import, 9728 invalid items have been detected. You can correct them to add to import.“ with a comment “Card not found”.

Please find attached error file.

Questions:

1/ May I get some assist to verify csv file and instructions how I can correct the file - although I am really surprised that file from TCGPowerTools is not accepted.

2/ The csv file contents more information than detected columns, like price (in eur) comment or info about artist’s signature. Is it possible to import those extra columns?

Anyway, if you want sellers with larger collections to easy adapt on your platform should you offer seamless import of the account from biggest other markets like CardMarket, CardTrader or TCGPlayer.