Use a filter to adjust the content based on Membership Level for the User Page that is created with PMPro and the User Pages Add-On.

pmpro-user-page-content-filter-per-level.php

<?php
/*
 * When the user page is created, add some content based on membership level.
 *
 * @param array   $postdata The data to use when saving the new user page.
 * @param WP_User $user     The user the page is being created for.
 * @param object  $level    The membership level object.
 *
 * @return array The data to use when saving the new user page.
 */
function my_pmpro_user_page_purchase_postdata_content( $postdata, $user, $level ) {
	if ( 1 === $level->ID ) {
		// Show specific content for this membership level.
		$postdata['post_content'] = "<p>Thank you for using our site.</p>

			<p>You are a SILVER member, thanks for joining!</p>

			<p>Here are helpful links:</p>

			<ul style='margin-bottom: 3em;'>
				<li><a href='" . esc_url( home_url() ) . "'>Homepage</a></li>
				<li><a href='" . esc_url( home_url( '/members/') ) . "'>Members Area</a></li>
				<li><a href='" . esc_url( home_url( '/contact/') ) . "'>Contact Us</a></li>
			</ul>
		";
	} elseif ( 2 === $level->ID ) {
		// Show specific content for this membership level.
		$postdata['post_content'] = "<p>Thank you for using our site.</p>

			<p>You are a GOLD member, thanks for joining!</p>

			<p>Here are helpful links:</p>

			<ul style='margin-bottom: 3em;'>
				<li><a href='" . esc_url( home_url() ) . "'>Homepage</a></li>
				<li><a href='" . esc_url( home_url( '/members/') ) . "'>Members Area</a></li>
				<li><a href='" . esc_url( home_url( '/gold-rewards/') ) . "'>GOLD Rewards</a></li>
				<li><a href='" . esc_url( home_url( '/contact/') ) . "'>Contact Us</a></li>
			</ul>
		";
	}

	return $postdata;
}

add_filter( 'pmpro_user_page_purchase_postdata', 'my_pmpro_user_page_purchase_postdata_content', 10, 3 );