Update as of Friday, May 27, 2022:
The ISTQB has extended the online (remote proctored) permanently.
The details for online exams are now on the AT*SQA website. There is a link at the top of the home page (https://atsqa.org) which explains the requirements and details.
The registration process is described at https://atsqa.org/istqb-exam-registration
If you have purchased a course that includes exams, and are ready for the voucher, just let me know and I will send it to you. If you need to purchase an exam, you can do that through me, or directly through the Kryterion web site as the last step in your registration.
Please feel free to ask me any further questions.