I have a site with an old ACF v.4.4.12
ACF: Options Page 2.1.0
ACF: Repeater Field 2.1.0
If I just upgrade to ACF v.5.7.7 there seems to be problems.
Would it be better to upgrade to ACF PRO where I suppose these extras are included?
How is the procedure to do this without losing current data?
I ask because I do not want to risk something unforeseen happening.
The server is a Ubuntu server 16.04 with these plugins among others:
WPML Multilingual CMS v.4.0.7
WPML String Translation v.2.8.7
WPML Translation Management v.2.6.7
Yoast SEO 8.3