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HELP: Sending messages issue

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I cant seem to send messages in thunderbird. Please help me as I followed this steps from https://proton.me/support/thunderbird-connection-server-timed-error

Everytime I send something, my connection is timed out but other apps that require internet connection seems to be fine.

I cant seem to send messages in thunderbird. Please help me as I followed this steps from https://proton.me/support/thunderbird-connection-server-timed-error Everytime I send something, my connection is timed out but other apps that require internet connection seems to be fine.
Attached screenshots

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Please follow the steps described here and come back is the issue still remains.