Another "same here" for me :/
Got into 3.03 today, eager to explore a bit (which i did, and Beta3 IS still amazing!). But play was constantly interrupted by the already mentioned "unable connect to server" message. Which spoils the "fun" bit...
At times the game allowed me right back in, putting me into my destination galaxy (jumping around Eranin, Styx, Ovid). Other times i had to restart the game to resume Open Play.
Weirdly enough i also got disconnected in station services and at times also seem to have lost some cash and/or cargo after reconnecting, which is even more annoying.
If there's anything i could do to fix this on my end i gladly try. But my internet is very stable otherwise, so i'm hoping for a fix on Frontier's side...