I answer late after your post, so you maybe found already. Anyway quite some people still do it in Europe.
There are quite some in Poland. I recall one in Krakow outside downtown, I guess just called Fotoserwis, one in Łodz, and there have to be in Warzsawa anyway. You have to deal with polish. Just google.pl in polish to fish addresses.
In Tallinn, Estonia, a guy used to do, but last time I was in contact he told me he was not longer interested in fixing them, besides an issue can be availability of some parts but you can try, he can communicate in english :
https://fotoremont.ee/en/eng/ .
In Ukraine I dealt with this guy from Dnepropetrovsk, who does all kind of cameras, he used put online partial video insights of repair jobs, and he sells full detailed commented step-by-step disassembly/reassembly of some camera ( I bought the one for the Kiev-60):
http://fotoremontnik.ru/contacts in russian only (and possibly ukrainian too).
Postal service is worklng but very slow and there's some risk of worse in case full scale destruction of hubs and bridges is launched..
Have you contacted Arax to check they are working? No particular reason not. Also, and possibly some of the guys subcontracted by Arax for repairs, outside Kiev, these people with that Ebay shop, do also repair. In fact what they sell is stuff they have overhauled or fixed:
https://www.ebay.com/str/yuretsperfect being on ebay they can communicate in english.
Of course same issue with postal service.
around the corner, in Transnitria, ie. deserved by postal service as Moldova, these Ebay shop, they do sell Salyut/Kiev that made overhaul, themselves or local technicians. Could ask:
https://www.ebay.com/usr/www_tirasphoto_com
In France you can ask here:
https://appareil-photo-argentique.com/index.php/infos-pratiques-contact/
There are of course some in Russia but there's the payment system issue.