Do you use any third part service which uses your API from Kraken?
you probably need to look for the culprit from there. Using API from exchange on unreliable trading bot can result in trading on some overpriced shitcoin, all you said that happened looks like such a scenario to me.
Thanks, since months I don't use any trading bot at all. And all these stupid trades were done in 1 day, which reduced my fund to be 15% of before.
And until now I cannot login yet to Kraken to check.
And Kraken has not answered me what has happened