Flickr PhotoStream Error

Hello.

My problem is:

When y setup Flickr PhotoStream and save all changes, it shows me an error message.

Invalid values, the settings have not been updated

API Key is not valid

And by the other side, when I load the wordpress page where I embed the code, it shows me another error message.

FlickrPhotostream error: The lightbox attribute can be only “none”, “colorbox” or “swipebox”.

And on the settings I have put on “lightbox” = “none”, and also I have introduced well the API Key.

https://www.ads-software.com/plugins/flickr-photostream/