pillowbaker provided links to 3 different versions of the series. I went with this one:
(example)
Anna 1x01 El Bosque Nos Protege.mkv [2.13 Gb]
It has internal subtitles and the English ones seem to be in sync. If you apply the external subtitles to it, they will be out of sync.
I am guessing you downloaded one of the other versions of the series.
For the other 2 versions of the series, the subtitles posted earlier will NOT be in sync, likely not for ANY episode. You will need to resync the subtitles for each episode. I recommend an excellent tool like SubtitleEdit:
https://nikse.dk/subtitleedit I find it essential for syncing subs, which I have to do all the time.
DreamScape provides a link to a version at the.next.thing, which requires a signup to access the posts but is an excellent site. They are also very rigorous about their releases so I can be pretty certain that their version will be in sync with the subtitles they provide.