I need guidance, I own a 12 years old domain, never expired, In 2012/13 got penalized by Google due to thin content and spammy backlinks. I tried to recover slowly, disavow links, removed thin content pages, however, I was busy in my job so couldn`t give so much time but added some new contents also. Last year domain authority was 24 and page authority 31, today domain has DA 54 and PA 41.
I am working with my writer to write more contents but I am scared that should I publish on this domain or buy a new one because I have read on forums and articles that it is better to not to use if domain once got a penalty. While in my case if there is still penalty why domain authority increased. Please suggest