for ipados, had to click the screen and extension could be working

giving up my windows laptop, i had to use keyboard on ipad to visit web. i found that your thankful work “vimkey”, and i’m so thank for this.
i discovered on my ipad after toggle dif-tab vimkey wouldn’t work whatever i use (shift+j) or (command+1,2,3). then click by finger, vimkey could be work well.
i don’t know is there some set wrong or this extension is only for mac.
ipados: 18.0.1
thanks a lot for ur work and any likely help