Garmin Edge1000 (Software: 15.50.0.0) does not stay connected to my Garmin Vector3 pedals (2 sided)

My Edge1000 (Software: 15.50.0.0) does not stay connected to my Garmin Vector3 pedals (2 sided) . To connect I always have to remove the Vecors in Edge settings and reconnect which is instantly done but awkward! When I begin trainig the connection is gone. No data displayed or stored on the Edge 1000.

(Hoever my FR935 connects always and stays always connected at the same time. This sorts out the Vectos as error source. Garmin Varia taillight is on board too and works as desired on my Edge 1000 AND my FR935 at the same time.  I have the second Edge 1000 therefore and still have no Vector3 data displayed or stored...)

German: Mein Edge1000 Software: 15.50.0.0 verbindet selten bis nie zu Vector3 Wattmesspedalen. (Mein FR935 verbindet IMMER!. Garmin Varia ist auch an Bord und funktioniert auf Edge UND FR935 gleichzeitig wunschgemäß. Ich habe schon den zweiten Edge 1000 weil das mit dem Vector nicht gehen will.)