OK, finally my hosting company for www.cliff1976.com took some action, and wishes seem to be working more or less normally again.
To try and prevent future similar outages in the future, I have imposed a 200-wish limit on all wish lists. This means that if you have over 200 wishes, you won’t be able to make any new ones until you erase the old ones.
You can also help tidy up the database by erasing wishes you don’t need anymore or re-using existing wishes with new author/title info. On your wish list page, there is now a link to remove all crossed-off wishes for which you have entered no BCID. My hope this that this will help keep the site from running out of space so quickly, and thusly keep future outages to a minimum.
Thanks for your patience in the meantime.