Gmail calendar sms stopped by Avast

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Hello,

Since I setted up Avast on my Android Samsung Trend Lite, all the sms unknown are stopped.

The problem is that Gmail calendar send sms without number that Avast could identify and each time Avast ask me if I want to blacklist this sms.

Could anyone have an idea to avoid this behaviour?

Thanks

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This is expected behavior, you can modify your filter in advanced settings, but if there is no number I am not sure if it will working - but you can still specify the other numbers and allow only the google messages.