Openvpn client notification stop to work (OpenVPN)

Hello,
how is written in the subject I discovered today all my notifications are not working due to a problem with the openvpn client.
I try to fix it (i’m managing both server and client) with no luck. At the moment when I turn on the vpn (with all traffic routed or only vpn network) hass.io is not able anymore to contact the various providers for notification with this kind of errors:

Unable to connect to Dark Sky. HTTPSConnectionPool(host=‘api.darksky.net’, port=443): Max retries exceeded with url: /forecast/59510ffc37f271166486a22dade39e0b/49.21012,16.61056?units=ca&lang=en (Caused by NewConnectionError(’<urllib3.connection.VerifiedHTTPSConnection object at 0x6cf39e50>: Failed to establish a new connection: [Errno -3] Try again’))
17:10 components/darksky/weather.py (ERROR)
Error while getting Updates: urllib3 HTTPError HTTPSConnectionPool(host=‘api.telegram.org’, port=443): Max retries exceeded with url: /bot643861444:AAHdHvHWrQjSt80hqeLaPme7pSKyWfvwFjo/getUpdates (Caused by NewConnectionError(’<telegram.vendor.ptb_urllib3.urllib3.connection.VerifiedHTTPSConnection object at 0x6cf34110>: Failed to establish a new connection: [Errno -3] Try again’))
17:10 /usr/local/lib/python3.7/site-packages/telegram/ext/updater.py (ERROR)
Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after connection broken by ‘NewConnectionError(’<telegram.vendor.ptb_urllib3.urllib3.connection.VerifiedHTTPSConnection object at 0x6d0d78b0>: Failed to establish a new connection: [Errno -3] Try again’)’: /bot643861444:AAHdHvHWrQjSt80hqeLaPme7pSKyWfvwFjo/getUpdates
17:10 /usr/local/lib/python3.7/site-packages/telegram/vendor/ptb_urllib3/urllib3/connectionpool.py (WARNING)
HTTPSConnectionPool(host=‘ios-push.home-assistant.io’, port=443): Max retries exceeded with url: /push (Caused by NewConnectionError(’<urllib3.connection.VerifiedHTTPSConnection object at 0x6eeda770>: Failed to establish a new connection: [Errno -3] Try again’))

Have someone any nice solution?