By prolonging the anti retroviral therapy (with a regime containing a Reverse Transcriptase or Ingetrase Inhibitor) for a certain time after the CRISPR-Cas treatment should lead to the complete elimination of the viral DNA, comparable to PrEP in un-infected individuals.
I don't know how your upper row is configured but if it's anything like mine, you simply press the left button (labeled 123!#() in the beginning) til you reach the numeric keyboard
EndeavourOS twice on the list?