@nsnobel21, if I understand your scenario correctly, you are misinterpreting things. When you pay 5000 to The Unlocker, that is an expense of doing business. It is no different than a carpenter buying glue, a mechanic buying spare bolts, an insurance agency paying rent, or a retail shop purchasing bags to place customer’s items into. In each case, the company is buying something consumable that will be used up. There is no fixed asset, because you do not expect the purchased item to last. There is no inventory, so you cannot consider the purchase as cost of goods sold. Because you have already paid 5000 in currency to The Unlocker, there is no account payable. That is, there is no liability.
You are correct that when you issue a sales invoice to your customer you create an asset, because you then have an account receivable (100). Your customer owes your company money. But that transaction actually has nothing to do with your Unlocker expense. And when your customer pays you, there is no affect on your previously entered Unlocker expense. In fact, if your customer pays you immediately at the time of service, you don’t even need a sales invoice. Just receive the money into a cash or bank account. No account receivable would be created.
Your apparent desire is to use Manager to keep track of how many credits you have remaining with The Unlocker. The problem is, the only monetary transaction took place when you purchased the 5000 credits. You might be able to use Manager for what you want by treating the Unlocker credits as inventory. But that might get you into trouble with your tax authority. They might want to see your physical inventory, which you won’t have.
Disbursements tab currently in development is finished, you might be able to treat Unlocker credits as billable expenses. The purpose of this new tab is to account for monetary disbursements you intend to rebill to customers. But you aren’t really buying credits for rebilling. You are buying them to use in performance of services for your customers. I suspect you may not even keep detailed information about who your customers are, so you might not be able to associate disbursements with customers. (They need to be identified explicitly, although I suppose a dummy customer ID could work.) So my opinion is that treating things that way might not be approved by your accountant or tax authorities.
Think about how the companies in my examples keep track of things. The carpenter looks at glue remaining in the bottle. The mechanic looks in the parts bin to see how many bolts are left. The retail shop can see the stack of shopping bags declining. The insurance agency can look at the calendar and know the prepaid rent is being used day by day. No accounting transactions are involved. Any accounting tool is useful for certain things, but never every thing. Manager keeps track of the flow of money. Using it for keeping track of other things requires that those things be equivalent to money (as inventory items can be).