Distil Web Monitor error

Let me ask you a question.
I use Distil Web Monitor.
But, when I click the icon, an error message is displayed:


Error initializing service
Code: EDATABASEOPEN
Msg: Failed to access database; check browser settings
If custom privacy settings are enabled, a WebExtension should be added to exceptions under browser’s settings. Learn More

What should I do?
Please teach me…

Firefox: 60.0.2 (64bit)
Distil Web Monitor :1.10.5


質問させてください。
Distil Web Monitorを使っています。
でも、アイコンをクリックするとエラーメッセージが出てしまいます。


Error initializing service
Code: EDATABASEOPEN
Msg: Failed to access database; check browser settings
If custom privacy settings are enabled, a WebExtension should be added to exceptions under browser’s settings. Learn More

どうすれば良いでしょうか?
どうぞよろしくお願いします。。

Firefox:バージョン 60.0.2 (64 ビット)
Distil Web Monitor :1.10.5

Have you tried contacting the developer? There’s a support email address and support website listed on the add-on page.

Thank you for your replay!
I haven’t yet. I didn’t notice that. I will send him a mail.