Exhibit 32.1

Certification of the Principal Executive Officer and Principal Financial Officer

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report on Form 10-Q of RYVYL Inc. (the “Company”) for the period ended September 30, 2025, as filed with the U.S. Securities and Exchange Commission on the date hereof (the “Report”), I, George Oliva, the Interim Chief Executive Officer and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company as of and for the period covered by the Report.

By:	/s/ George Oliva
Name:	George Oliva
Title:	Interim Chief Executive Officer and Chief Financial Officer
	(Principal Executive Officer and Principal Financial Officer)

Date: November 14, 2025