Firstly your supplies fit squares on the digital services – see list here: https://www.gov.uk/guidance/the-vat-rules-if-you-supply-digital-services-to-private-consumers#define-digital
However in your case, it seems this para is applicable “Unless you sell digital services entirely through digital platforms or marketplaces, who take on responsibility for accounting for the VAT due, you must consider how you intend to account for VAT on supplies of digital services to consumers”, in which case you don’t need to worry about VAT registration.
It might be worth asking the platform providers on who takes on responsibility for accounting for the VAT due.
Hope this helps.