License and Trademarks - Erpnext for Commercial Use?

Hi Good Day can someone elaborate the whole procedure of how to use license and trademarks as mentioned here

I am trying to make a source of income by implementing erpnext as it is Opensource and some modifications made to match the need of my clients? question can i use the logo and the name erpnext as part of my contract of service? it says on the website " The primary purpose of your project is to promote the spread and improvement of the ERPNext software. Your project is non-commercial in nature (it can make money to cover its costs or contribute to non-profit entities, but it cannot be run as a for-profit project or business)." so does it mean i cannot use erpnext trademarks when implementing it on my clients? or do i need to remove any logo or brandings for me to be able to use it and implement it on my clients?.

Thanks in advance im just confuse how this trademark work and i will not violate any regulations. Thanks in advance.