Help in hreflang opencart?

Question

opencart

We dealt with languages, changed the code in localization, installed different packages.
Initially, the encoding was ua, but according to international requirements, they eventually changed ua to uk.
In connection with these actions, it disappeared from the main page
. What could it be? Are there ways to fix this?
Backup didn't help.

Answer 1

OpenCart doesn't add hreflang linking out of the box. Apparently, to implement this, you use some kind of module and you need to look for the problem there.
We have the Multilanguage add-on for SEO Pro , which adds language prefixes to URLs and generates hreflang correctly.