How many customers does Nexo have?

Could you possibly enlighten me on the matter of Nexo's clientele? I'm quite curious to know, how extensive is their customer base? Do they boast a significant number of users, or is it more of a niche service? I'm trying to get a better understanding of their market reach and popularity. Would you mind shedding some light on this matter for me? I'd greatly appreciate any insights you can provide.