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Fix my Custom Wordpress Backend

I have a custom invoice program programmed through wordpress, it worked well in the beginning, now it's just slow and has a thousand errors!

Who can help me there FAST further?

It is only the backend programmed to the invoice program.

There are now 3-4 errors that need to be fixed.

Everything explained in the attachment as a picture, hopefully understandable.

Навыки: PHP, WordPress, MySQL, HTML, Архитектура ПО

О клиенте:
( 1 отзыв ) Bremen, Germany

ID проекта: #33955197

170 фрилансеров(-а) готовы выполнить эту работу в среднем за €322

(623 отзывов(-а))
8.9
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9.1
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8.7
ahmadayaz

Hi I will Fix your Custom Wordpress Backendm , I'm totally on your end to get started with it, always available to discuss this opportunity, so be rest assured that I will provide you with top-notch work. Just to be Больше

€230 EUR за 7 дней(-я)
(322 отзывов(-а))
8.6
bdsiddhi

Dear Employer, Hope You are doing well!! • We are professional WordPress/Woo-Commerce Experts. We have been working on WordPress for the last 10+ years & also developed 200+ WP Projects. • I am very much interested & Больше

€250 EUR за 7 дней(-я)
(306 отзывов(-а))
9.0
r4rony

Hello, I have seen your job post and checked all the attachments for this project. I'm interested to help you to fix the custom WordPress backend error on your website and I will give you 100% work results on time Больше

€250 EUR за 7 дней(-я)
(235 отзывов(-а))
9.1
(239 отзывов(-а))
8.3
raju51279

hi,how r u, can i check ur present site url n if possible give [login to view URL] provide list of changes. Please check recent wordpress websites [login to view URL] (elementor) [login to view URL] (elementor) https://lokal Больше

€287 EUR за 5 дней(-я)
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8.6
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Friends4it

We already have built large scale applications, CRMs, ERPs and huge systems can be found at our website. Like [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] https: Больше

€220 EUR за 5 дней(-я)
(503 отзывов(-а))
8.2
Brightinfotech3

Dear Sir/Mam, Hope, you are doing well...!!! Thanks for sharing your project requirements. I have checked your Job Description. We need to work into your existing website and fix some issues. Can you please send me Больше

€150 EUR за 5 дней(-я)
(365 отзывов(-а))
7.9
ykarora26

Hello sir, You are looking for Fix my Custom Wordpress Backend . I have read your job description and assure you that I am a perfect fit for the job. I am a senior Designer & Developer having 9+ years of experience in Больше

€200 EUR за 7 дней(-я)
(364 отзывов(-а))
8.0
(347 отзывов(-а))
7.9
dagdya99

Hi, I'm interested to work on your project: Fix my Custom Wordpress Backend , I will start project immediately Please let me know if you require any detailed information. Waiting for your reply Thanks

€100 EUR за 1 день
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maxsmith8

Hi There, I can start right away and complete your project successfully. I am a Senior Full-Stack developer with over 8 years of experience . I specialize in Front-End and Back-End web development, ranging from small Больше

€250 EUR за 5 дней(-я)
(301 отзывов(-а))
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