@Lilly28
Haven't experienced this personally, but here's a thread below with comments from many users who have experienced difficulties in switching from Host to Guest view, and vice versa. Hopefully, you may be able to find something in it that might work for you. If not, you'll have to call CX, as @Sandra126 advised.
Check the third last comment on the page below from Gayle in Canada. (I was going to add a screenshot of it, but apparently, the icon to do so has disappeared from the CC.. )
https://community.withairbnb.com/t5/Help/Switching-from-Host-to-Traveler/td-p/266268/page/5