Licence revoke problem

Until recently I successfully used your plugin on one site, when I'm done, I revoke the licenses and install the plugin on my other site and reactivate the license but it doesn't work anymore, You have made some changes that do not allow the license to be transferred? <div id="ir-ext-ui" style="color: #000000; font-size: 16px; line-height: 16px; background-color: #f7f7f7; border: 1px solid #999999; border-radius: 1px; top: 1px; left: 1px;"> <div class="ir-ext-dimensions"><span class="ir-ext-rendered" title="Rendered image dimensions (after any scaling/resizing has been applied)"> x </span> <span class="ir-ext-natural" title="Natural image dimensions (without applying any scaling/resizing)"> (x) </span></div> <div class="ir-ext-filesize"></div> </div>