Phoca Guestbook - compatibility with Joomla 6

[robior]

Good morning,
My site was created with Joomla! 5 and I installed the Phoca Download and Phoca Guestbook free extensions.
I'd like to know if upgrading the site to Joomla 6 will cause problems with Phoca Guestbook, because I saw that this extension doesn't indicate compatibility with Joomla 6.
Thanks in advance.
Roberto Iori

https://imgur.com/a/yg3HpMC