Resuming atc

how to resume atc when loading into flight. I connected to tower, got my squawk setting right, but atc is not telling me to increase altitued etc, nor is it giving me the option to ask for increase altitude

Are you on an IFR flight? Or just VFR and requested ‘following’?

it was an ifr flight
but i saved and loaded again

When talking to ATC, do you have the option to “try again with last flight plan”?

Although I wouldn’t be shocked if getting ATC to know your flight plan after saving/loading simply doesn’t work currently.