Hi,
I never had problem importing with API and Coinbase until today.
Suddenly when I try to import via API , Cointracking is displaying "invalid key",but I didn't change anything and when I go to my Coinbase settings to check the key, it's the same one I use since the beginning.
Is there something dealing with the API version,in the Coinbase settings I see the API version 2018-01-11 and a upgrade button ?
I just imported trades from Gdax with no prob ,if someone experienced the same prob or knows what I can do to fix this I would be thankful;)
Create a backup of your transactions before doing this. Delete the API key in CT and CB. Recreate it with a start date after your last successful import. Technically, setting the start date shouldn't be necessary as CT apparently ignores potential duplicates based on the Coinbase TXN ID but better safe than sorry. If it all goes wrong, just restore from backup.
Thx for helping,I'm gonna backup everything before doing something.
But I just don't understand how to recreate a key with a special start date,the first time I created it I don't remember about such a setting( is it on CT or CB ),or is this something linked with the API version upgrade button I was talking about with 2018-01-11 date ?
Sorry if my question looks weird ,I'm a newbie with API stuff but I'm happy to learn more

First you have to create the API key on CB. Make sure you keep both the key and the secret.
Then create an import on CT. You will need to put in the key and secret you created on CB here. There are a few options when you create this. One of them is a start date that will only import transactions after that date.