Hey everyone, thanks for reaching out and sorry to hear about the difficulty you ran into with 'Effect Expert' challenge.
First, please note that due to the nature of the thread, I have moved this over to the Player Support section instead.
Due to a number of contacts that we've received, I can now confirm that details of the issue have been forwarded to our development team for further review. As soon as we will have any additional information to share, details will be posted here, in our official forums, so keep an eye. Until then, apologies about any inconvenience this may cause and if you have any further queries or notice any other issues, feel free to drop us a message at any time!ย