The legality of online manga varies. Legitimate platforms that have obtained rights to distribute manga are legal. However, sites that offer pirated or unlicensed manga are definitely not legal. It's important to support legal channels to ensure creators are compensated for their work.
Well, legal manga apps usually have partnerships with publishers and follow copyright laws. However, there are a lot of shady apps out there that violate these laws and are definitely illegal.
Manga resale is often illegal. The original creators and publishers have exclusive rights to distribute and sell. Reselling without permission infringes on those rights and is unethical.
I don't really know. The determination of whether lolicon manga is legal in Switzerland involves a detailed assessment of the country's legislation and judicial interpretations. It's best to seek legal advice for a definite response.