If the problem is in the disk space, then I'm afraid we will not be able to fix it, since the application does not have enough permissions to it.

Hello

Could you send screenshot with problem?

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Мы сами ждём :(

I think this is a problem in Firefox. The application does not have access to the disk and cannot know how much space is left.

Hello

We don't have such feature now.

Maybe, if this app can delete browser data.

Do you use Ccleaner (not app)?

Did you change Privacy settings of browswer?

Hello

Do you use our sync feature?

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А можете подробнее описать проблему?