Total Cost is showing on per pay period where as communicated rate is monthly

Summary

On benefits confirmation statement, per pay period costs are shown instead of communicated costs

Content

We have transit plan that has communicated rate as Monthly. However, in self-service, total costs are shown as per-pay-period basis. Employee enters the monthly cost on self-service. The amounts on the confirmation statement are getting recalculated. If I enter $500 as a monthly amount, system is calculating the total cost per pay period as $1000 which is incorrect. If the system HAS to calculate per pay period amounts, the total cost must be less than $500 as employee is entering a monthly rate.

Is this a bug or a configuration change is needed?