This is really beyond the scope of this Forum, because it is about fundamental accounting, not how to use Manager. Basically, however, you should not be moving amounts back and forth. And receivables should not be coming into play at all.
Create a new asset account: Prepaid expenses. Post your initial payment there. This is equivalent to debiting Prepaid expenses and crediting your bank account.
Every financial period, use a journal entry to transfer that period’s portion of the expense to the relevant expense account. Debit the expense account and credit Prepaid expenses. When the time period covered by the prepayment runs out, the Prepaid expenses account will be empty. And P&L reports for each period will show only the expenses applicable to that period.