“Fees” and “Timing” extension issue

Good evening,
running on php 5.5.38 and WP 4.9, just installed 2 Restropress Extensions and I’ve got my homepage layout messed up and infinite load after “Add to cart”.

I’ve deactivated “Delivery Fees” extension and my homepage back to normal, also deactivating “Store Timings & Delivery Cutoff” also cart back to work but absolutely:

– Cannot update PHP
– Cannot change/update theme

There’s anything I can do ?

Best regards,
D