If you head to Products > Add-ons, you'll be able to see a list of all the add-ons that have been created in your Billsby account. Here, you can delete the add-on by clicking Delete on the right side. If the add-on is linked to a plan, this button will be greyed out as you'll need to unlink it before you can delete it.

To do this, Navigate to Products, plans and cycles > Add-ons > Edit > Plans. Here you can remove the linked plans by clicking the bin icon next to the plan. Make sure to save your changes by scrolling down and clicking Save changes to add-on.

If an add-on has been completely deleted, it will be removed from all of the subscriptions it's been added to.

When an add-on is removed from a customers subscription in this way, a pro-rated refund won't be issued for the add-on removal, so you'll need to consider notifying and refunding any customers that are affected by this.

Yes! You can upload an image to be shown to customers in the checkout and self service account management. In step 1 of creating an add-on, just hit the Add-on image toggle and then upload your image. Files must be a minimum of 400 x 400 in size and high resolution .png or .jpeg files work best - we’ll resize to suit.

If you choose to pro-rate your plan then when a customer signs up, the add-on price and the included units of allowance will be pro-rated during checkout. For example, if you charge your customers on the 1st of every month and a customer decides to join on the 15th, the number of units included in the allowance would be pro-rated based on how many units the customer was due to receive each cycle, alongside how many days they have left in their current cycle. So, if the customer was due to receive 10 units each full cycle, but they joined at exactly halfway through, then they'd only receive 5 units to use until the end of the billing cycle.

On their next bill date, however, they would be charged the full amount and receive all the included allowances for the next cycle.

Whether the allowance has included units or not, it will be added to the customers subscription immediately once the customer has confirmed its addition. The same is true for add-ons.

If the customer is changing their plan immediately (by selecting the today option) they’ll lose the rest of the paid use of their add-ons. If they choose to change their plan at the end of their current cycle, they’ll be able to continue using their paid add-ons until the end of the cycle.

No matter when the customer chooses to change their plan, any add-ons they have on their current plan will not be automatically added to their new plan, they’ll have to do this in the plan change flow.

Even though payment gateways will only accept a minimum charge of 0.50, we’ll accept an add-on as low as 0.01. This is because it’s assumed that the customer will be charged for multiple subscription elements when they are charged for their add-ons, likely to bring the price above 0.5. If this isn't the case, we'll round up to 0.50 so that the transaction is accepted by the gateway.

If you want to limit the number of units of add-on a customer can subscribe to, you can do this by using a tiered, volume, or ranged pricing model. After selecting one of these pricing models you can configure the price so that the maximum number of units of an add-on you want a customer to be able to subscribe to is the limit of the last pricing tier.

For example, if you want to charge £1 per add-on unit up to 5 units, you could choose a tiered or volume based pricing model and set up a unit tier of 1-5 units at £1 per unit. When the customer then adds this to their subscription they will only be able to add a maximum of 5 units as there is no price configured for 6 units or more.

In the checkout and account management screens your customers will be able to add units up to the maximum unit, where the + button will become locked. If they try to enter a unit in the field that exceeds the maximum unit this will also be automatically changed to the maximum unit value. So, using the above example, if they entered a 9 into the unit field this would be automatically changed to a 5.