Hmmm...
There are two likely reasons it isn’t moving:
1. The game is paused. The grey II next to 2509-07-30 is the pause sign; it turns into ▶ when time runs. A launch arriving at Tare pauses the game. Press Space (or 1/2/3) and the array should be finished by 08-01. <--- Probably this is not the case
2. One engineer is injured. Both have 126 mSv. Tare gives 1.2 mSv a day, so they’ve probably been aboard for about 100 days. If the array has been at 0% for a while, that’s likely the cause:
Open SITE › OPERATIONS (you’re on STORAGE). The bay line at the bottom will say NEEDS 2 ENGINEERS in red.
Check ROSTER (F7). One of them probably says INJURED. A launch that gets holed crossing the Lid injures its crew for 60 days. They go back on duty on their own when that ends, and the bay starts again. To build sooner, send a third engineer up.