I’m having the same problem. the add to cart and view product buttons disappear in the final column of of the Memberships>Products area. Along with the rest of the php and html the page prints after it.
When I remove the function “function somdn_change_read_more”
from somdn-functions.php starting on line 167 the page loads perfect again after that. I believe I isolated the problem to line 171 and 172 but am not sure how to fix it.
Thanks,
Ray