We have extended the availability of temporary downgrades to PHP 5.6.
Downgrades can be made in the control panel as long as there is official security support from PHP, i.e. until 31 December 2018.
The reason is that many customers regretfully have not kept their software up to date. We ask customers who have problems with PHP 7.1 and 7.2 to temporarily test downgrading to 5.6, and then immediately update their software.