I have completed level 21 and I cannot use the rocket launchers I have collected. What should I do?
There are 2 spots that show level 21. One is controlled by winning missions and is displayed under the energy bars. The other is the drone level. You need to make sure that you've upgraded your drone to level 21 before you can add the rocket attachment.
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There are 2 spots that show level 21. One is controlled by winning missions and is displayed under the energy bars. The other is the drone level. You need to make sure that you've upgraded your drone to level 21 before you can add the rocket attachment.