Polylang slug problem

G’day Guys

I have a drama with polylang. When I switch English to Spanish it uses the right slug but when I switch Spanish to English it sends you back to the front page.

There is something not linking right with the slug but can’t figure out what…

https://howeasyenglish.com/language/en/pricing/ to Spanish works right, but;
https://howeasyenglish.com/language/es/precios/ to English doesn’t seem to work.

This seems to be across the board as well…

Thanks in advance for any help!!
Fisch