Hi! Thank you for your work. Just so you know, it's against mangadex's terms to split up chapter into parts if it is not the original way that the chapter was published. There's an exception if the images were to heavy to upload the chapter whole, I think (but I'm not really sure).
I think it's also in the terms that you can combine the parts back into one chapter?
I'm sorry if I came off as being rude, I just dont want your hard works get reported and taken down or something 😔