Update site to Wp 5.0+, GP theme 2.4.3+, GP Premium 1.9.1+ breaks site.

Hi Tom,

I have over two years development / design time invested into a prototype project. I'm looking to present to a client end of March.

Running the following:
Wordpress 4.9.16
WooCommerce 3.8.0
GP Premium 1.9.0

GeneratePress 2.4.2
Parent Theme

Issue:
There's been so much welcomed change under the hood of GeneratePress that's it's completely broken my site once I tried to update a few months ago. Overwhelmed, I just now began looking into it again.

I WANT to move to all FLEXBOX but I have a feeling that may be part of the problem. Plus I'm using some now depreciated GP Premium techniques for layout.

Question:
Can you or someone on your team login to the backend and give me your opinion as to my best strategy. Do I need to rebuild from scratch? I have rolled back updates once. I can make a second staging clone for your review / updates which may be best.

Alternatively, is not updating the GeneratePress parent theme an option? If so, should I match GP Premium to a specific version?

I'm sure this is not ideal or wise. Thoughts?

I look forward to your reply. Hope all is well.

Brad

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Admin Dashboard -
Woocommerce -
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WordPress environment

WooCommerce version: 3.8.0

WordPress version: 4.9.16 - There is a newer version of WordPress available (5.6.2)
WordPress multisite: –
WordPress memory limit: 256 MB
WordPress debug mode: –
WordPress cron:
Language: en_US
External object cache: –
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Server info: Apache
PHP version: 7.2.34
PHP post max size: 16 MB
PHP time limit: 30
PHP max input vars: 1000
cURL version: 7.29.0, NSS/3.44
SUHOSIN installed: –
MySQL version: 5.5.65-MariaDB
Max upload size: 16 MB
Default timezone is UTC:
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Database

WooCommerce database version: 3.8.0

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Theme
Name: gpdonebox-child -- Flexbox
Version: 0.1
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