Is My Income from Freelancing Work Halal?

**As-salamu alaykum,** When I was 14-years old I wanted to do freelancing work related to programming and web development as I was very interested in that field. I opened up an account on Upwork.com (then oDesk). However, I didn't know that in Upwork Terms of Service they state that in order to open an account on Upwork one must be at least 18-years old. I open up an account without knowing this information. I honestly didn't even know you're supposed to read their Terms of Service before opening an account. Then I worked on a number of different projects and earned quite a lot of money. Now I must mention that I was only paid by my clients to work on their web development projects and the projects themselves were not haram. I created applications and those applications didn't have any haram use or didn't contain anything contrary to the Sharia. I recently realized this and I understood that I made a big mistake. I regretted this decision and repented to Allah. But currently, I really need this money. Now my question is, is the income I earned from freelancing be considered halal? ***In short**, I unknowingly opened up an account but the work I did was halal, so will the income be halal too?* Thank you very much for your answers, Abraar