(To Prospectus dated May 21, 2024 and the Prospectus Supplements dated May 21, 2024, April 18, 2025, June 2, 2025, and October29, 2025) Up to $100,000,000 This prospectus supplement (this “Prospectus Supplement”) amends and supplements certain information in the prospectus,dated May 21, 2024, filed with the Securities and Exchange Commission (the “SEC”) as part of our registration statement on Form S-3(333-279123), as supplemented by our prospectus supplement, dated May 21, 2024, as further supplemented by the prospectussupplements dated April 18, 2025, June 2, 2025, and October 29, 2025 (collectively with this Prospectus Supplement, the “ATMProspectus”), relating to the offer and sale of shares of our common stock, par value $0.01 per share (“Common Stock”), from time totime pursuant to the terms of the certain ATM Sales Agreement, dated May 3, 2024 (the “Agreement”), we entered into with H.C.Wainwright & Co., LLC (“Wainwright”), as sales agent. During the twelve calendar months prior to, and including, the date hereof, wehave sold an aggregate of 1,203,544 shares of our Common Stock, as adjusted to reflect the one-for-fifteen reverse stock split effected As of May 15, 2026, the aggregate market value of our outstanding common stock held by non-affiliates (“public float”)was approximately $90.0 million based on 10,282,258 shares of outstanding common stock held by non-affiliates as of such date, at aprice of $8.75 per share on April 22, 2026, which was the highest closing sale price of our common stock on The Nasdaq Capital We are filing this Prospectus Supplement to amend the ATM Prospectus to update our public float and indicate that, sinceour public float is above $75.0 million, we are no longer subject to the sales limitations of General Instruction I.B.6 of Form S-3. As ofthe date of this Prospectus Supplement, we are increasing the aggregate amount of common stock that we are offering pursuant to the On May 14, 2026, the Company held Aethir tokens (“ATH”), inclusive of unlocked tokens and rights to receive tokens in thefuture, totaling approximately 6.209 billion ATH, with a market value of approximately $42.1 million, based on a price of $0.0068 per Our Common Stock trades on the Nasdaq Capital Market (“Nasdaq”) under the symbol “AGPU.” On May 14, 2026, the lastreported sale price of our Common Stock on Nasdaq was $5.60 per share. INVESTING IN OUR SECURITIES INVOLVES RISKS. SEE THE “RISK FACTORS” ON PAGE S-9 OF THEATMPROSPECTUS AND IN THE DOCUMENTS INCORPORATED BY REFERENCE IN THE REGISTRATIONSTATEMENT CONCERNING FACTORS YOU SHOULD CONSIDER BEFORE INVESTING IN OUR COMMON STOCK. Neither the SEC nor any state securities commission has approved or disapproved of these securities or passed uponthe adequacy or accuracy of this Prospectus Supplement or the ATM Prospectus and accompanying prospectus. Any H.C. Wainwright & Co. The date of this Prospectus Supplement is May 15, 2026.