It is MONZGB2L (not MONZGB21)
I’d recommend reading this blog post, however, https://monzo.com/blog/2018/07/24/receiving-international-payments/
It is MONZGB2L (not MONZGB21)
I’d recommend reading this blog post, however, https://monzo.com/blog/2018/07/24/receiving-international-payments/