how can I fix this
Best answer by Mats
When clicking that prepaid $45 base plan you have to pay $45 right away for your plan to update. If you have $45 in your account you also have to agree to the change for the new plan. If you don't have $45 in your account it will ask you to top up so you can pay for the new plan. Are you doing that?
Changing base plans takes effect right away and your current active base plan is cancelled. You also won't be credited for any remaining days left on your current base plan when you switch to a new one.