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I don't think this kind of services are really useful today because most people work in home office or coworking spaces, which are anonymous. Anyway, as a customer I'd be very disappointed if I find out that I'm being tracked. That's why I'd never use this kind of services in my websites.

There's a lot that could explain the change. I would look at all the competitors websites in your industry, not just one. Try to find a common trend between the ones that went up and the ones that may have gone down. Also use tools such as google optimize and web.dv measure to compare the two websites. Lastly, take a look your on-page analytics from GA for mobile in the past 3 months and see if there is a significant decrease or an anomaly in how users are interacting with your website. All of these can be factors that may have been there all along and simply amplified by the algorithm update. Once you pinpoint the cause, it will be much easier to fix. Good luck!

While I agree with EGOL, I'd also do two more things: Check to see if the same issue happens when going to the organization's site when you are at home or somewhere other than work. It could also be an issue because of your office's security settings. Regarding if Google will penalize you, no. If it's a paid listing (eg you're getting listing only because you paid) then it's a bit more of a grey area, but it's also a legit association and so I wouldn't worry about it to be honest. If you are worried about it, then you could always ask for it to be nofollowed. But as I said, I think this is a case where a followed link is totally fine and no search quality reviewer would bat an eye at it.

Hello! Glad to hear the project should soon be progressing! I haven't worked with automated translation in a while, so I'm not sure how good an automated solution would be nowadays, but a native-speaker editor at the least is probably necessary (and perhaps optimal if the jargon is particularly unusual). A story for an example: my father is a swimming coach and was teaching some Arabic speakers, so he tried to translate the training session (full of swimming jargon) into Arabic. Everything went surprisingly well, besides the translation of "distance per stroke." The tool didn't know that "stroke" in swimming means the same thing as "stride" in running, and the translation read "distance per heart attack."