Posted:
Per FL 720.306:
(8) PROXY VOTING.—The members have the right, unless otherwise provided in this subsection or in the governing documents, to vote in person or by proxy.
(a) To be valid, a proxy must be dated, must state the date, time, and place of the meeting for which it was given, and must be signed by the authorized person who executed the proxy. A proxy is effective only for the specific meeting for which it was originally given, as the meeting may lawfully be adjourned and reconvened from time to time, and automatically expires 90 days after the date of the meeting for which it was originally given. A proxy is revocable at any time at the pleasure of the person who executes it. If the proxy form expressly so provides, any proxy holder may appoint, in writing, a substitute to act in his or her place.
Per 718.112:
2. Except as specifically otherwise provided herein, unit owners may not vote by general proxy, but may vote by limited proxies substantially conforming to a limited proxy form adopted by the division. A voting interest or consent right allocated to a unit owned by the association may not be exercised or considered for any purpose, whether for a quorum, an election, or otherwise. Limited proxies and general proxies may be used to establish a quorum. Limited proxies shall be used for votes taken to waive or reduce reserves in accordance with subparagraph (f)2.; for votes taken to waive the financial reporting requirements of s. 718.111(13); for votes taken to amend the declaration pursuant to s. 718.110; for votes taken to amend the articles of incorporation or bylaws pursuant to this section; and for any other matter for which this chapter requires or permits a vote of the unit owners. Except as provided in paragraph (d), a proxy, limited or general, may not be used in the election of board members. General proxies may be used for other matters for which limited proxies are not required, and may be used in voting for nonsubstantive changes to items for which a limited proxy is required and given. Notwithstanding this subparagraph, unit owners may vote in person at unit owner meetings. This subparagraph does not limit the use of general proxies or require the use of limited proxies for any agenda item or election at any meeting of a timeshare condominium association.
3. Any proxy given is effective only for the specific meeting for which originally given and any lawfully adjourned meetings thereof. A proxy is not valid longer than 90 days after the date of the first meeting for which it was given. Every proxy is revocable at any time at the pleasure of the unit owner executing it.
Per Corporate law:
617.0721 Voting by members.—
(1) Members are not entitled to vote except as conferred by the articles of incorporation or the bylaws.
(2) A member who is entitled to vote may vote in person or, unless the articles of incorporation or the bylaws otherwise provide, may vote by proxy executed in writing by the member or by his or her duly authorized attorney in fact. An appointment of a proxy is not valid after 11 months following the date of its execution unless otherwise provided in the proxy.
(a) If directors or officers are to be elected by members, the bylaws may provide that such elections may be conducted by mail.
(b) A corporation may reject a vote, consent, waiver, or proxy appointment if the secretary or other officer or agent authorized to tabulate votes, acting in good faith, has a reasonable basis for doubting the validity of the signature on it or the signatory’s authority to sign for the member.
(3) If authorized by the board of directors, and subject to such guidelines and procedures as the board of directors may adopt, members and proxy holders who are not physically present at a meeting may, by means of remote communication:
(a) Participate in the meeting.
(b) Be deemed to be present in person and vote at the meeting if:
1. The corporation implements reasonable means to verify that each person deemed present and authorized to vote by means of remote communication is a member or proxy holder; and
2. The corporation implements reasonable measures to provide such members or proxy holders with a reasonable opportunity to participate in the meeting and to vote on matters submitted to the members, including an opportunity to communicate and to read or hear the proceedings of the meeting substantially concurrent with the proceedings.
I think your PM is mistaken.
Politely explain to them that this is not your understanding from reading the applicable FL Statutes or your governing documents but that you could have misunderstood. Then ask them to cite the statute or governing document that prohibits proxy representatives to be anyone other than a member of the Association.