Hello, I hope you can understand what I say

I am a former player and recently decided to return but when I enter the game it tells me that my ID or password is wrong
Which is strange since I was able to enter the page without problems, I already tried changing the password and even then in the game it still says that it is wrong

I don't know if my account suffered from something in my absence or if it is some kind of error.
I would like to know if it can be recovered or if I simply resign myself to making a new one.