I can't open most of the old titles I'm trying to

[Manko-sensei]

I'm using Windows 10, Mozilla Firefox (private window settings) or Brave (in this case without being logged in) as browser (for some reason it doesn't happen with Microsoft Edge), and today I'm getting the following error either if I try to load old titles (not recently updated in terms of years) I have bookmarked or I search them using the box:
Error: [GET] "https://api.mangadex.org/manga/8284?includes[]=artist&includes[]=author&includes[]=cover_art": <no response> NetworkError when attempting to fetch resource.

Edit: it's happening arbitrarily now, even with titles that are recently uploaded.

 

[BraveDude8]

Why are you trying to load manga via a legacy ID? The old IDs haven't been actively used in two and a half years.

As for more recent stuff, no clue, try clearing all your site data/cache and see if that fixes it.

 

[Manko-sensei]

If I'm using an old link is because I bookmarked it some years ago and whenever I wanted to check it again (for instance, some months ago to save them using the feature of following manga by Reading/Complete/On Hold/etc.) and since today I haven't run into this issue. If that's the reason, I'll need to change the url of a good amount of bookmarks (which were pretty useful when Mangadex was down to rewrite the code).
Edit: an example I just did now, I used https://mangadex.org/title/40294/reverie-in-a-deserted-bus and it found it properly, but showing another url https://mangadex.org/title/f80578ee-042f-45c4-b049-894a79721867 . In most of the cases, it turned on a page error, and in some cases later showed me the right page with the url change.