I tried deactivating but doesn't work with above.
Then somehow it got deactivated when i refreshed the app and now i got certificate.
But still, it shows me that it's in use. 
Why is it so hard to activate/deactivate every single time??
Jeong Min Chu We will be pleased to help you with this problem so have logged a support case on your behalf. We do prioritise customers who have a support contract so please keep in mind it could take up to 48 hours, especially over a weekend, but rest assured we will contact you as soon as we can. You will be contacted at the email address used for this Community. Support Case Id : CS0007600.
Jeong Min Chu We will be pleased to help you with this problem so have logged a support case on your behalf. We do prioritise customers who have a support contract so please keep in mind it could take up to 48 hours, especially over a weekend, but rest assured we will contact you as soon as we can. You will be contacted at the email address used for this Community. Support Case Id : CS0007600.
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