Usually, the “Tactical Ace” stamp of System Defender is broken and prevents you from achieving a full collection of stamps, and as such receiving the X2 bonus. This has now been fixed!
As the stamp has been removed from your stampbook, you are now able to obtain all the System Defender stamps. If you do this, you will get double the coins when playing System Defender!
I’m really glad that this stamp was finally fixed, and I decided to make this post in case you were not aware of this change. Thank you for reading, be sure to check back for the latest Club Penguin Rewritten news and guides!