As this topic is not flooding with comments, it seems that this is not a common issue. We’ll try to narrow it down, if possible. This is always a bit of a challenge, as we are not a tech community.
My educated guess is that for some reason Android/Chrome is more prone to these rather random issues, than for example iPhone/Safari. I have a clean Android One device and very rarely have any issues.
Please keep the topic open. I’ll post an update if I find anything useful, or request a close if this disappears on it’s own – like it has before.