It'd like to preface all the cons with the understanding that these are all relatively trivial concerns; there's no malice or mistreatment I've seen.
It's a growing company that has taken some risks, and sometimes those risks haven't paid off. I won't comment on others here who have voiced concerns about transparency and lack of support because I didn't experience what they did, but based on my experience working at start-ups both larger and smaller than Ovia, sadly sometimes people suffer because business decisions don't pan out. And that sucks for those involved, but I certainly haven't felt like there is any more or less transparency here than at other places I've worked.
What does need to change, though, is that when problems or suggestions are brought up, they should be handled with more alacrity than I've seen recently. For example, people have complained about some of the remote worker technology (e.g. meeting room A/V that isn't someone's MacBook) for a year now, and yet the situation has only recently seen any traction toward being resolved. It may seem trivial, but when it keeps being brought up and sorta gets waved aside as something that will be dealt with in the future, it sends a signal that day-to-day concerns are not as important and makes people less likely to bring up other, perhaps more personal issues.
And as with any mission-driven company, YMMV on how deeply you identify with particular elements of said mission. As the company has grown there has been a maturation of the vernacular surrounding what we do, and what that means for newer hires has clashed with some of the older guard at times.