Atomic wallet not recognizing some standard ERC20 coins

Fairly new here. I am trying add CSV files from ATOMIC wallet. Atomic seems to give me the option of adding each individual file only of each coin so I cant upload just one file. Anycase I have been adding some CSV files successfully but others I cant and they are common ERC20 coins such as DOT, SXP etc
I tried adding to a custom coin but that didnt work either.
How do I add standard ERC20 coins if the system is not recognizing them ?
For example it would not recognize DOT, GRT, SXP, KNC, UTK and couple of other lessor know ones.

Surely I must be able to add or upload the data somehow ?
There too many transactions to add manually.