You might be clearing a cache? Or deleting browsing history. Or something similar that might be deleting your mgo history
Start bookmarking
Do you use the Want to Read, I'm Reading and Already Read Option for all of them? It helps a lot to keep your titles in place..
I usually put titles like this:
Want To Read - Completed but I don't feel like reading as of this moment. You don't get notifications for any updates once you put a title here.
I'm Reading - Ongoing and I'm waiting. Since I need update notifications I put them here and at the Already Read.
Already Read - Everything I have read and dropped
I find that doing this helps a lot well at least I only have the I'm Reading to worry about to sort if I ever need to move the completed ones to Want to Read.. But as you can see I have like 5000+ and I'm lazy to do so lmao.
Hopefully things work out for you!
Happy Reading!
(๑•ㅂ•)و✧
Also one way to keep up is to write the last chapter read and the summary of the chapter on your personal comments section. That's how I keep track and refresh my mind if I forget where I left off. You can check what I do in my Already Read list.
You could make an account on myanimelist. It's super easy to keep track of everything on there.
Tysm y'all ilysm
Ok like why t heck does my history on manga go keep on getting deleted it's so hard to keep track of manhwas this way, like if I ever want to continue a manga that I had initially left I CANT FUCKING FIND THE CHAPTER I STOPPED READING ATTTT