A report Say Chrome Web Store Hit by Fraudulent Transactions
As a report of Google Gita tech has confirm that they recently face some issues on extensions.And currently they stop to push a new update or upload a paid extension on Chrome.Becouse of Some fraud Problem.But you can Download there existing chrome extension via store.
Because Google want to confirm that every transection for Chrome extension must be safe. And any user didn't get scam by some one for that real and for long term goal they stop the service temporary.
Google will solve this issue as soon as possible and Developers will allow to update there existing paid Extension.