Signs a Fix Is Enough
A checkout with too many fields, shipping cost that only appears after the buyer commits, missing wilaya and commune logic, or a heavy multipurpose theme dragging down mobile speed — these are common, specific, and fixable without rebuilding anything underneath them. If the hosting is reasonable and the plugin count is under control, the underlying install is probably fine.
Signs It's Actually a Rebuild
Cheap shared hosting straining under a large product catalog and real mobile traffic is a foundation problem, not a settings problem. A theme and plugin stack layered on top of each other over several years, where changing one thing breaks two others, tends to cost more to untangle than to rebuild clean. And if the business has scaled past what a standard WooCommerce setup handles well — very high order volume, complex catalog logic — a custom-built application is often a better fit than another attempt at making WooCommerce stretch further.
A Five-Minute Diagnostic
Load the site on an actual phone over mobile data, not office wifi. Count checkout fields — more than five or six is already a problem regardless of what's causing it. Check whether shipping cost is visible before the buyer has to commit. Open the plugin list and count anything that hasn't been touched in over a year. None of this requires a developer to check, and it usually makes the fix-or-rebuild answer obvious on its own.
Either path leads back to the same foundation — see what an Algerian store actually needs to convert for what "done right" looks like once the diagnosis is clear.
Getting a Second Opinion Before Paying for Either
This is exactly the kind of question worth getting an honest answer to before committing budget — how to tell a developer who'll give you a real diagnosis from one who defaults to recommending whichever job pays more.
A slow store isn't proof it needs to be rebuilt. It's proof something specific is wrong — and that's worth finding out before paying to redo the whole thing.