Thank you for your follow up.
Yes. Generally, if an attorney misses or misinforms a client about an important deadline and the client is unable to pursue an appeal, that would be generally considered a legal malpractice.
Generally, the two options would be to consult with a local legal malpractice attorney and also to file a formal complaint against the attorney with the state Bar.
Here is the link to the official Louisiana Bar website which has the forms and information about filing a formal complain against an attorney:
You can find an experienced and skilled local legal malpractice law attorney by using this established and reputable attorney information / referral websites:
When, choosing a local attorney to represent you, it would be a good idea to choose someone who has a practice exclusively dedicated to real legal malpractice law, has at least 10 years of experience and handled similar matters and also regularly practices before the court located in the jurisdiction where your matter might be heard.
I wish you the best of luck!