I live in Croatia, and I know that SSPX has masses in cities Zagreb (our capital and biggest city), Rijeka, Split and sometimes in Dubrovnik, but not every week. They have in Croatian language a blog called "Christus Rex" and new website called "SSPX Hrvatska".
I think only in Zagreb there is one church that FSSP have or used to have Latin mass regularely. I don't know current situation after "Traditiones Custodes", and for diocesan Latin mass. It's only in Zagreb which is more than 500 km from my place.
Nearest one is in Split which is about 105-110 km away, but we have a highway to Split from here.
This one Croatian priest is called pater Marko Tilošanec, and I don't know if he is conditionaly ordained when he joined the SSPX. I watched his interview on SSPX website, maybe you could search it there. I think you can contact this priest directly on this email adress: fsspxhr@gmail.com.

I'm also concerned about validity of new ordination rite, but it's seems to me they are still vaild. As for rite for consecration of bishops, there are more problematic and dubious. 
I'm also concerned about Novus Ordo masses in Croatia not being vaild because they all use "for all" and not "for many" in consecration of wine. SSPX official stance on this that this doesn't invalidate the Novus Ordo mass.

Regarding Fr Marko Tilošanec, I have tried asking him in the past about his ordination through email but I just got linked the standard SSPX video on the new rite which isn't very useful. Even some comments on another youtube video by the sspx interviewing him have asked about his ordination, but they just respond with the same video link.

This then is your answer.  Apart from that, any priest who's unwilling to simply tell you who ordained him and when, he must be avoided.

Just go to a Serbian Orthodox Divine Liturgy for guaranteed valid Sacraments in your region. Just make the trip to the nearest SO chapel. 

Croatia and Bosnia love the Jew World Order. You can bet that full usurpation of their chapels by hook-nosed Christ-killers is inevitable. 

Just go to a Serbian Orthodox Divine Liturgy for guaranteed valid Sacraments in your region. Just make the trip to the nearest SO chapel.

This is insane. not only because they are schismatics and heretics but also because Serbs... (not all serbs are bad but they have a problem cough greater serbia cough).

I think Shimano must not know the atrocities the Serbs committed against the Croats not so long ago. Unthinkable horrors. 
Croatia is by far more Catholic than Serbia. 

I'm not a Serb. I just know the truth.

You punk Croats sided with Bosnian anti-Christ muslims (1 John 4:3 and 1 John 2:22-23) to harm, steal from and kill Serbs.

This is propaganda like the Jєωιѕн h0Ɩ0cαųst. You can find some information here.

https://www.cathinfo.com/catholic-living-in-the-modern-world/ustashe-and-the-catholic-church/msg846237/#msg846237

The Ustashe weren't perfect but they were no were near as bad as the chetniks.

He recently had a sermon whose point was basically that Williamson left the vineyard of the Lord (the SSPX) because he heard many sympathize with him.

That's a bit concerning that he mentioned the sspx being 'the vineyard' when the sspx has had many scandals and has changed a lot over the years (not to mention their stance on EENS). Though it's good that it appears you guys have at least valid sacraments and a valid mass. Thanks for the info.