Yeah, someone got the same response a day or so ago. But they said they just wouldn't restore it - not that they couldn't. I wish if people sent emails they would share accurately quotes information instead of paraphrases because it leaves more speculation - especially when people already have some non-rated manga restored.
heres my convo with them
Yeah here’s how the convo went——
Me: Hi. I know you guys are working hard to help everyone get their manga back since the lists have been erased but I have a serious question. If we didnt rate the manga and just added it to the already read, reading and want to read lists, will we get them back?
Some people said that it’s actually up till 2023 that stuff has come back but I’ve been saving stuff since about 2016-2017. And only three things have come back. Everyone is confused and panicking and I just want some personal clarity for myself.
Thank you in advance.
Dev: the manga which be rated or add tags can come back.
Me: So no other manga will come back unless we rated them or added tags?
Dev: yes
—— end convo ——

I finally sent the devs an email because I don’t have a single manga/manhwa restored in my lists even after both passes, and I wanted to clarify my situation.
Part of their response to my inquiry was: “We can only get the manga back if you rated or added tags when added manga to your list."
I’ve since sent a reply asking whether this basically means that for people who didn’t rate the manga/manhwa they added to their list (such as myself), they’re gone forever and can’t be restored. I’m still waiting for a reply, but I understand they’re probably dealing with a lot at the moment.
I just wanted to bring this up here in case there’s information about this that I’m not aware of. A few days ago I was told that non-rated manga are being done later. However, based on the devs reply, is there really no more hope for those of us that never rated any of the mangas/manhwas they read?
UPDATE:
Just for everyone's information this was the complete reply that I received from the devs (along with the part I shared earlier):
"I'm sorry, one of our data disk was crashed, we lost part of the data of users several days ago, but we still can restore part of the data from rating and tags. we can only get the manga back if you rated or added tags when added manga to your list"