The homepage will not open
Try a normal reload first. Then check whether another website opens in the same browser. A failure affecting everything points to the connection or browser, while one broken address may be an old bookmark. Open the Seez homepage directly and use its search if an individual title link is missing.
Search opens but finds nothing
Reset the filters. A title, release year, country and language combination can be so narrow that no entry qualifies. Search just the title, then add one constraint. For One Piece, choose 1999 for the anime or 2023 for live action. The catalog does not contain every production, so an empty result is not by itself a site outage.
My List looks empty
Check whether you are in the same browser and ordinary window where you saved it. Private browsing, a different device or cleared site data can explain the difference. Merge a previous backup if you have one. Do not keep clearing browser storage while trying to recover a locally saved list.
A video stops after Watch now
Once you have followed a viewing offer, the selected service controls playback. Note whether the failure affects one title or every video there. Try a lower quality setting, check audio and subtitle choices, and use that service's help for an account or player error. Watching help separates title selection from player troubleshooting.