Hello Katie,
Please visit our 'How t Use' page for instructions on how to refill the ink and more: https://thekiddospacestore.co.uk/pages/instructions
Incase you face any challenges please contact us on info@thekiddospace.com and we will be happy to help.
Grace
TheKiddoSpace Customer Support Representative
“This stamp bleeds on all materials we have tried it on so many different ones and its ruined them. I contacted the company to get a return but i have had no reply and this was a few months ago”