Problem with RTL WordPress

Hi

I have 2 WordPress in my website, one of theme is English WP and everything is OK, but another one is a RTL (right to left) WordPress, the problem is when I activate and configure secondary title plugin, this message show in the secondary title config page and I haven’t secondary title in the output:

Array ( [0] => %d8%a7%d8%ae%d8%a8%d8%a7%d8%b1-%d8%ad%d9%85%d9%84-%d9%88-%d9%86%d9%82%d9%84-%d8%b1%db%8c%d9%84%db%8c-%d9%85%d9%be%d9%86%d8%a7 [1] => %d8%a7%d8%ae%d8%a8%d8%a7%d8%b1-%d8%b5%d9%86%d8%b9%d8%aa-%d8%a8%d8%b1%d9%82 [2] => %d8%a7%d8%ae%d8%a8%d8%a7%d8%b1-%d8%b5%d9%86%d8%b9%d8%aa-%d9%86%d9%81%d8%aa-%d9%88-%da%af%d8%a7%d8%b2 [3] => news [4] => %d8%af%d8%b3%d8%aa%d9%87%e2%80%8c%d8%a8%d9%86%d8%af%db%8c-%d9%86%d8%b4%d8%af%d9%87 [5] => %d9%85%d9%be%d9%86%d8%a7-%d8%af%d8%b1-%d8%b1%d8%b3%d8%a7%d9%86%d9%87 )

https://ww.wp.xz.cn/plugins/secondary-title/