Hi and welcome
I full agree - if your piggies are found to have ringworm, then only a combination of proper treatment and strictest hygiene will do to get on top of it. Please accept that no online place can diagnose reliably just from a picture and that none of us can replace any necessary vet visit anmd hands-on examination or further testing needed for a correct diagnosis. We can only tell you when you need to see a vet, help you to ask the right questions to get the most out of it and support you during the recovery with practical tips.
Please take the time to read our Ringworm guide; it contains all the necessary information as your hygiene measures need to go much further than a little cage cleaning and hand-washing and a bit of creaming. Unless you are prepared to really throw the kitchen sink at it and get on top of it, it will remain a never ending battle with you risking to catch (and spread) it yourself. Invisible spores are shed in their thousands and will live for up to around two years or even a little more being able to cause a new outbreak at any time. Ringworm may not be fatal but it is the most contagious species jumping problem you can deal with.
We've had 15 years of dealing with ringworm issues on this forum and longer with our own piggies to trial every possible treatment and to work out in just how many ways ringworm can be transmitted and what can be done to stop each angle. That is why the practical advice in our ringworm guide REALLY works when you follow the advice fully. Coconut cream will definitely not heal ringworm or kill any spores; it is very much a waste of money.
Here is the link again:
Ringworm: Hygiene, Care And Pictures
Please see whether you are still within the time limit to reclaim any vet fees from the seller or whether you have missed the deadline with your DIY treatment. Here is the necessary information:
New Guinea Pig Problems: Sexing & Pregnancy; URI, Ringworm & Parasites; Vet Checks & Customer Rights
Could you please change the location that appears with every post you make to your country or - if you are in the USA - your state. The first is for your own protection but adding your wider area helps us massively to tailor any advice to what is relevant and available where you are, so we can take in climate, general background, vet and rescue access, common brand names etc. into our considerations straight away. Our forum is UK based but we have enquiries from quite literally all over the world and from very different conditions. The more we can tailor our advice, the better we can support you through any treatment.
Click on your username on the top bar, go to account details and then location. Thank you.