Mission 7 - not progressing after convoy attack

EDIT: this post is answered in campaign page.

Hi Ranger 79!

After I finish the convoy attack and head back to base, I get the base attack message, telling me to call when 20 clicks out (I'm already at 21 miles out when the call is made),

But I get no radio message/ option to call in and mission is not progressing.

Tried it 3 times already,

I'm stuck here.

Thanks for the support