That is most definitely NOT the case. I have multiple Area Charts, Column Charts, and even a Geo Chart that were all created in the free version. I’ve been updating these for years with no issue, the last time in March 2024. Went to update them today, and every one of them is now forcing a licence purchase. I have never had the PRO version, as I don’t use graphs enough to justify it. I’ve also had to rollback the plugin to restore the same functionality as it always had in the past.
The way the changelog has glossed over these changes, and the way the plugin is now described, is extremely disingenuous. The change is a literal hijacking and ransom of site content. At its core, it’s a fine plugin, but trust is now broken if this is the developer behaviour on offer.