They were bought by TWS and prices changed suddenly. Many things that were included with domains like email account became paid options, and expansive.
I had a dozen of domains with them for years (more than 15) and made a lot of people go to them. Yet, I moved everything out at that time, and helped friends and acquaintances to move out to. Staying there would have cost me several hundreds of additional euros per year. I move some of my domains to OVH, and some other to Infomaniak (I already had domains registered with both of them and am a very happy customer of both).