- Edited
What is happening when you're being hacked?
Do they leave a message on your screen?
Delete/modify a few chapters?
Try to access your other accounts?
If so, it's likely someone or a bot has accessed your account. Most likely the later option.
If you use Google to sign in, you can raise a ticket to their trust and safety. This link provides some info on it https://support.google.com/accounts/answer/6294825?hl=en
Another check to see if your login email has been compromised is via this link: https://haveibeenpwned.com/
The reason I'm suggesting to check the security of your login accounts, is that at most times hackers can access accounts through these. And the access can arrive in the form of an email containing a hidden virus sent to your email from another account or phishing link.
It always pays to be sure your Google, Facebook and likewise accounts are as secure and not the issue.