Hi Kat,
Thanks so much for reaching out!
I’m sorry to hear that the relabeler extension is not working on Filter Bar and Community Events. I just tested it myself on my local site, and everything seems to be working as expected. As a first step, you may want to try flushing your permalinks by going to Settings<Permalinks<Save Changes. Check your Community Events Page and see if anything changes.
Alternatively, you can try to change the wording by using a snippet and putting it in your functions.php file:
https://theeventscalendar.com/knowledgebase/change-the-wording-of-any-bit-of-text-or-string/
To alter the text in Filter Bar, you can go to Event Settings<Filters and change the Title on any of your filters.
I hope this helps, let me know how it goes!
Thanks,
Jaime