Currently I cannot add fields with more than 255 characters, as per VARCHAR 255
Therefore wpDataTable cannot be used for a lot of different data types.
LONGTEXT | 4,294,967,295 (232−1) bytes = 4 GiB
https://dev.mysql.com/doc/refman/8.0/en/storage-requirements.html#data-types-storage-reqs-strings



Hello, have solved the problem with adding more characters than 255 ?
Its a right pain not being able to add simple text such as an address, and contact details into a single cell when it exceeds 256 chars. This is basic stuff??