Have you looked at the logs (Journal and Expert)?
Carina Terclavers:
I have now watched many videos where they show how to import the EA into MT5 from the data folder. I can however not seem to copy and paste the EA from downloads to the MQL- Experts folder.
Any advice on how to fix this issue?
You can't copy/paste the ex4/5 files of MQL5.com Market purchases, if that is what you ask.
You need to install your purchases properly under your MQL5 account.

You are missing trading opportunities:
- Free trading apps
- Over 8,000 signals for copying
- Economic news for exploring financial markets
Registration
Log in
You agree to website policy and terms of use
If you do not have an account, please register
I have now watched many videos where they show how to import the EA into MT5 from the data folder. I can however not seem to copy and paste the EA from downloads to the MQL- Experts folder.
Any advice on how to fix this issue?