I was going to blame it on eBay's Friday Maintenance day when things do go awry from time to time, but you say it happened yesterday too, so the fault lies elsewhere.
No one else ( Yet!) , has reported this, so it doesn't seem to be a technical glitch, but perhaps coming from the device or browser you are using ?
Worth switching if you can, if not using already, this combo, a laptop / PC with Chrome. Clear cache and cookies too, see if all that helps.
@forestfeline62