I received a mail few hours back informing[1] that the ARM64/C2 instances would be retired by Dec 1 and technical support will end on Jul 1. The reason for the retirement is vague, the email mentions 'several stability issues'.
I've personally been running one of my projects on ARM64[2] for nearly a year and haven't had any major issues except reboot require power cycling.
The announcement sounds fishy, it's not the first time Scaleway has retired its low tier instances[3], I suspect it do more with their Business than actual stability. I've recommended Scaleway's ARM instances several times, even here on HN; But now I'm reconsidering my options as I've been using ARM for my compute needs for a while now to align with my carbon goals.
Update: Official forum discussion[4], looks like others feel the same way.
[1] Someone else have posted the email content on Reddit - https://www.reddit.com/r/selfhosted/comments/g11uuj/scaleway...
[3]https://blog.scaleway.com/2018/introducing-scaleway-nextgen-...
[4]https://community.scaleway.com/t/c2-arm64-instances-end-of-l...