It appears that you did not read the manual? :-)

The log is full of these kinds of messages
"Exception when getting historic prices for epic GER30, API call failed with status code 404 and body {"errorCode":"error.price-history.io-error"}"

The first remark mentioned in the manual here http://zorro-project.com/manual/en/ig.htm is this

"You need a dedicated asset list for IG, since the asset symbols are very different to the asset names. For instance, the EUR/USD symbol is CS.D.EURUSD.CFD.IP You can find the correct symbol names with the IG API Companion. Log in with you user name, password and api key, then scroll down to Market Search, enter your search String, e.g. DAX. Now look in the response for the "epic" key, e.g. "epic": "IX.D.DAX.IFD.IP""

Also sorry for the late reply, I realised today that I was logged out and therefor not receiving any notifications