LinkedIn profiles have a new section called Certifications, which is specifically designed to show professional certifications and credentials. This is the most appropriate place to show your status as a member of the CFA Institute or indicate your status as a candidate. I think we can say CFA level 2 approved or candidate, etc. I've seen some of the institute's staff write it like this.
So there won't be any problems. Also, what's the benefit if someone doesn't see you when looking for CFA? This constitutes a violation of Standard VII (B) of the CFA Institute's ethical and professional standards, and the CFA Institute may sanction you for it. For those who still don't understand it, there's nothing wrong with stating somewhere on your resume that you are a CFA level I, 2 or 3 candidate, provided you are already registered for an exam or have taken an exam and are waiting for the result. I have passed all 3 levels of the CFA program and will obtain my license upon completing the required work experience.
However, you have problems when you write things like John Smith, CFA Level II, or Mark Anthony, CFA Level III. Yes, if you have passed level 3 of the CFA but you are not yet a certificate holder (when you apply for one), that would be fine. Therefore, including your application or membership in the CFA Institute in this section may create the impression that you are an employee of the CFA Institute, which could be considered a violation of the Code of Ethics and Standards of Conduct Professional. Completing all three levels of the CFA program is an important achievement that demonstrates not only technical competence, but also discipline, determination, and commitment to professional growth in the field of finance.