Firstly, I want to reassure you that your credit still exists and hasn't gone into a black hole never to be found again!
What has happened here is that the credit, has been converted into a coupon of its own and saved in your account to be used at the checkout at a later date.
To find and use this coupon at the checkout, please follow the instructions below.
Firstly, after filling your basket and logging in, click on the credit icon at the top right of your account page - this will cause a pop up in the bottom right corner to appear.
In this pop up, click on the "Your rewards" button:
and this will show you the credit coupon(s) that has been created:
Click on the coupon you would like to use and then click "Apply code":
This code has now been applied to your basket and will discount the total:
Unfortunately, you are unable to use this coupon in conjunction with more credits added with the slider. If you also attempt to add credits with the slider, the coupon in your basket will be replaced with these points - the original coupon will still be available in your rewards.
If you would prefer to have all your credits reinstated into your account as one balance, please get in touch and we will be happy to do this!
Please note: if you have previously got in touch and asked for your "disappeared" credits to be reinstated into your account, this may still show in your rewards as a coupon. However, this coupon will not be valid for use as it has been disabled.