@vameade2013
If deleting, restarting and installing the latest version of the eBay app does not help, then try using a browser to reach ebay.co.uk instead of using the eBay app.
You may need to disable the setting that automatically opens eBay browser links in the eBay app by tapping and holding such a link, then choosing "don't open in the app".
App issues can be reported to eBay by shaking your device while the app is active.