As a former hosting engineer, at the risk of pissing on everyone's outrage parade, but unless an explicit guarantee of a backup is included in your plan's contract, or you can pay for backups as a bolt-on, then if you've lost data it's your fault for not planning for this scenario.
And I mean proper backups where you get, for example, twenty eight days of hourly backups and you can pick a specific version of file to recover in that 28 period. And where those backups are stored on different hardware or off-site. We offered this as a bolt-on (in-site and off-site). Tt was 20 quid a year for in-site, the off-site was a bit more. But a great many customers chose not to pay for this add-on, even despite the great big red bold warning text explaining that unless they paid for this add-on we made no guarantees about the permanence of their data in the event of a storage problem. Guess what....
Now that's not saying we didn't take snapshots of the hosting environment, but they were for internal use and to allow us to recover quickly in the event of something unexpected going wrong, but now and again stuff breaks.
Sure, it's unfortunate some lump of storage hardware has failed and whatever mirrors they may have had have been taken out as well. They possibly could have done better but shit happens sometime.
You shouldn't rely on an "implied backup" from your service provider, if you want that then you're going to be paying a shedload more for hosting your Wordpress and Woocommerce site. It's up to you to make sure absolutely sure your data is safe if it's critical to the day-to-day running of your business.
Edit: ok, so this is tucked away in their docs (thanks to itake below):
https://docs.gandi.net/en/simple_hosting/common_operations/s...
But it does say:
> Snapshots do not make a backup of your databases. If you would like to perform a backup of your databases, we recommend you perform an export, or launch a dump script via crontab.
The bottom line...is it guaranteed in your contract? Always check. And as per my follow up comment, those plan prices are are just too cheap for that facility to be taken seriously for business continuity. They're a convenience to quickly recover a version of a file, not a serious backup.